1.1 Maven整合SSM框架簡介
1.1.1 SSM框架整合概述
- 利用Maven整合SSM框架的思路
1.在對每個框架整合之前都需要先在Maven的pom.xml配置檔案中匯入相關的依賴
2.匯入完依賴接著再在pom.xml配置檔案中匯入相關外掛
3.整合各個框架對應的配置檔案,把與建立物件相關交給Spring即整合到spring.xml中
4.重新整個各個框架的核心配置檔案
- 注意點:
1.每整合完一個框架都要做相應的測試,防止一次性整合完,出現錯誤難以排查
2.本文以建立一個web專案為例
3.本文用的是eclipse的neon版本工具進行整合
4.配置檔案放在src/main/resources目錄下
1.2 Maven整合SSM框架整合詳解
1.2.1 在eclipse中建立一個工程
- 建立工程詳解
1.建立一個Maven工程,選擇骨架webapp,填寫好座標三要素
2.因為webapp骨架缺少src/main/java檔案結構,所以需要新增該檔案結構
3.如果建立的是普通java骨架,其會缺少src/main/resource檔案結構
4.建立完了,專案目錄結構如下:
5.在maven的pom.xml中新增所需的外掛,如source生成外掛,編譯外掛,Tomcat外掛
1 <project xmlns="http://maven.apache.org/POM/4.0.0"
2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
4 <modelVersion>4.0.0</modelVersion>
5 <groupId>cn.baidu</groupId>
6 <artifactId>UER-ORDER-SSM</artifactId>
7 <packaging>war</packaging>
8 <version>0.0.1-SNAPSHOT</version>
9 <name>UER-ORDER-SSM Maven Webapp</name>
10 <url>http://maven.apache.org</url>
11 <dependencies>
12 <dependency>
13 <groupId>junit</groupId>
14 <artifactId>junit</artifactId>
15 <version>3.8.1</version>
16 <scope>test</scope>
17 </dependency>
18 </dependencies>
19 <build>
20 <finalName>UER-ORDER-SSM</finalName>
21 <!-- source外掛 -->
22 <plugins>
23 <plugin>
24 <groupId>org.apache.maven.plugins</groupId>
25 <artifactId>maven-compiler-plugin</artifactId>
26 <configuration>
27 <source>1.8</source>
28 <target>1.8</target>
29 <encoding>UTF-8</encoding>
30 </configuration>
31 </plugin>
32 <!-- Tomcat外掛整合SpringMVC的時候補充 -->
33 </plugins>
34 </build>
35 </project>
6.注意:
-
- maven外掛資源,將當前maven工程進行compile編譯時載入,完成java1.8,1.7的使用,這裡統一使用1.8的版本
- 往下整合關於pom.xml檔案的配置內容,本人只給出需要新增的部分,讀者往上面程式碼中新增即可
1.2.2 將Spring框架整合到Maven中
- 整體思路
1.先在pom.xml檔案中匯入Spring框架所依賴的資源
2.然後編寫spring和核心配置檔案,spring.xml,該配置檔案進行包掃描,開啟註解配置
3.往下的整合只要跟建立物件,物件管理相關的配置都在spring.xml檔案中配置
4.編寫測試程式碼,測試整合是否成功
- 先在Pom.xml檔案中匯入Spring框架的依賴資源
1.匯入spring-context依賴資源,但是依賴具有傳遞性,匯入該資源可能也會引入其他依賴資源
1 <dependency>
2 <groupId>org.springframework</groupId>
3 <artifactId>spring-context</artifactId>
4 <version>4.3.7.RELEASE</version>
5 </dependency>
- 編寫Spring的核心配置檔案spring.xml
1.將spring.xml配置檔案放到src/main/resources目錄下
2.在src目錄下的資源在編譯的時候都會將位元組碼載入到target/classes中
3.在配置檔案中會經常看見"classpath:xxx.xml"路徑來讀取檔案,而classpath路徑是什麼位置?
4.在maven專案中classpath路徑預設src/main/resource路徑
5.往後跟建立物件相關的配置需要放在spring的核心配置檔案中,用於建立bean物件
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:aop="http://www.springframework.org/schema/aop"
5 xmlns:tx="http://www.springframework.org/schema/tx"
6 xmlns:p="http://www.springframework.org/schema/p"
7 xmlns:util="http://www.springframework.org/schema/util"
8 xmlns:context="http://www.springframework.org/schema/context"
9 xmlns:mvc="http://www.springframework.org/schema/mvc"
10 xsi:schemaLocation="
11 http://www.springframework.org/schema/beans
12 http://www.springframework.org/schema/beans/spring-beans.xsd
13 http://www.springframework.org/schema/aop
14 http://www.springframework.org/schema/aop/spring-aop.xsd
15 http://www.springframework.org/schema/tx
16 http://www.springframework.org/schema/tx/spring-tx.xsd
17 http://www.springframework.org/schema/util
18 http://www.springframework.org/schema/util/spring-util.xsd
19 http://www.springframework.org/schema/context
20 http://www.springframework.org/schema/context/spring-context.xsd
21 http://www.springframework.org/schema/mvc
22 http://www.springframework.org/schema/mvc/spring-mvc.xsd">
23
24 <!-- 開啟包掃描 -->
25 <context:component-scan base-package="cn.baidu"></context:component-scan>
26 <!-- 開啟註解DI -->
27 <context:annotation-config></context:annotation-config>
28
29 </beans>
- 編寫測試程式碼,測試maven整合spring框架是否成功
1.依據三層架構建好目錄結構
2.編寫控制層測試程式
1 package cn.baidu.controller;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Controller;
5
6 import cn.baidu.service.HelloService;
7
8 @Controller
9 public class HelloController {
10
11 // 注入service層物件
12 @Autowired
13 private HelloService helloService;
14
15 public String sayHi(String name){
16 // 呼叫對應service層的方法
17 return helloService.sayHi(name);
18 }
19
20 }
3.編寫業務邏輯層的介面
1 package cn.baidu.service;
2
3 //service層的介面
4 public interface HelloService {
5
6 public String sayHi(String name);
7
8 }
4.編寫業務層的實現類
1 package cn.baidu.service;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Service;
5
6 import cn.baidu.mapper.HelloMapper;
7
8 @Service
9 public class HelloServiceImp implements HelloService{
10
11 // 注入持久層物件
12 @Autowired
13 private HelloMapper helloMapper;
14 @Override
15 public String sayHi(String name) {
16 // 呼叫持久層方法
17 return helloMapper.sayHi(name);
18 }
19
20 }
5.編寫持久層介面
1 package cn.baidu.mapper;
2
3 public interface HelloMapper {
4
5 public String sayHi(String name);
6
7 }
6.編寫持久層實現類
1 package cn.baidu.mapper;
2
3 import org.springframework.stereotype.Repository;
4
5 @Repository
6 public class HelloMapperImp implements HelloMapper{
7
8 @Override
9 public String sayHi(String name) {
10 return "Hi,歡迎測試Spring框架的搭建情況";
11 }
12
13 }
7.變成測試類,測試整合情況
1 package cn.baidu.test;
2
3 import org.junit.Test;
4 import org.springframework.context.ApplicationContext;
5 import org.springframework.context.support.ClassPathXmlApplicationContext;
6
7 import cn.baidu.controller.HelloController;
8
9 public class TestHello {
10
11 @Test
12 public void test(){
13
14 // 初始化Spring容器
15 ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
16 // 獲取控制層物件
17 HelloController helloController = context.getBean(HelloController.class);
18 // 呼叫控制層方法
19 String str = helloController.sayHi("譚小杰");
20 System.out.println(str);
21
22 }
23
24 }
7.出現如下結果說明測試成功
1.2.3 將Mybatis框架整合至Maven中
- 整合思路
1.Mybatis框架主要有兩個配置檔案,一個是mybatis配置檔案和xxxMapper.xml(核心)配置檔案
2.對映配置檔案中主要配置資料來源,用於建立與資料庫連線的物件和配置核心配置檔案的對映
3.有以上兩個檔案的配置內容可知,資料來源的配置移到spring.xml配置檔案中
4.MyBatis框架需要建立sqlSession物件執行sql語句,獲取執行結果
5.所以在spring.xml檔案中配置sqlSession的bean,用於建立Session物件
6.MyBatis需要mapper介面,需要在spring.xml配置對應的bean利用動態代理建立其介面的實現類
7.編寫mybatis-config.xml配置檔案,裡面新增一些mybatis的功能
8.編寫xxxMapper.xml配置檔案,定義好namespace和定義所需的sql語句
- 在pom.xml配置檔案中匯入Mybatis框架所需的依賴資源
1.配置資料來源需要連線池依賴,jdbc依賴和資料庫型別依賴
2.本文用的連線池是阿里巴巴的druid,資料庫用的是MySQL
1 <!-- 連線池依賴 -->
2 <dependency>
3 <groupId>com.alibaba</groupId>
4 <artifactId>druid</artifactId>
5 <version>1.0.14</version>
6 </dependency>
7 <!-- jdbc依賴 -->
8 <dependency>
9 <groupId>org.springframework</groupId>
10 <artifactId>spring-jdbc</artifactId>
11 <version>4.3.7.RELEASE</version>
12 </dependency>
13 <!-- mysql依賴 -->
14 <dependency>
15 <groupId>mysql</groupId>
16 <artifactId>mysql-connector-java</artifactId>
17 <version>5.0.8</version>
18 </dependency>
19 <!-- mybatis依賴資源 -->
20 <dependency>
21 <groupId>org.mybatis</groupId>
22 <artifactId>mybatis</artifactId>
23 <version>3.4.5</version>
24 </dependency>
25 <!-- mybatis-spring依賴資源 -->
26 <dependency>
27 <groupId>org.mybatis</groupId>
28 <artifactId>mybatis-spring</artifactId>
29 <version>1.3.1</version>
30 </dependency>
- 在spring.xml中配置對應的bean
1.配置資料來源的bean標籤,該標籤主要數用於建立連線資料庫物件
1 <!-- 配置資料來源 -->
2 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
3 <!-- 4個屬性,資料庫驅動,URL,使用者名稱和密碼 -->
4 <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
5 <property name="url" value="jdbc:mysql:///mssm"/>
6 <property name="username" value="root"/>
7 <property name="password" value="root"/>
8 </bean>
2.配置sqlSession的bean標籤,該標籤用於建立session物件,用於執行sql語句和獲取執行結果
1 <!-- 配置sqlSession,動態代理實現持久層sqlSession介面實現的物件 -->
2 <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean">
3 <!-- 繫結資料來源即獲取connection物件 -->
4 <property name="dataSource" ref="dataSource"/>
5 <!-- 載入mybatis的獨立配置檔案 -->
6 <property name="configLocation" value="classpath:mybatis-config.xml"/>
7 <!-- 掃描對映xxxMapper.xml對映檔案 -->
8 <property name="mapperLocations"value="classpath:mapper/*.xml"/>
9 </bean>
10 <!-- 配置mapper介面的掃描配置用於建立mapper介面的實現類 -->
11 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
12 <property name="basePackage" value="cn.baidu.mapper"/>
13 </bean>
- 編寫mybatis-config.xml配置檔案
1.在src/main/resources目錄下編寫mybatis-config.xml配置檔案
1 <?xml version="1.0" encoding="UTF-8" ?>
2 <!DOCTYPE configuration
3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
4 "http://mybatis.org/dtd/mybatis-3-config.dtd">
5 <configuration>
6 <!-- 開啟駝峰命名設定,用於封裝持久層資料物件的內容-->
7 <settings>
8 <setting name="mapUnderscoreToCamelCase" value="true"/>
9 </settings>
10
11 </configuration>
- 編寫xxxMapper.xml配置檔案
1.在src/main/resources/mapper目錄下配置對應的xxxMapper.xml檔案,將sql語句新增其中
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
4 <mapper namespace="cn.baidu.mapper.StudentMapper">
5 </mapper>
- 編寫測試程式碼,測試Mybatis整合是否成功
1.在連線的資料庫中建立mssm資料庫,建立student表格,其有如下欄位和資料
1 //建立表
2 create table student(id varchar(225),name varchar(225));
3 //新增資料
4 insert into student values('a','王重陽'),('b','歐陽鋒'),('c','黃藥師');
2.編寫一個用於封裝資料的domain類
1 package cn.baidu.domain; 2 3 public class Student { 4 5 // 定義屬性 6 private String id; 7 private String name; 8 // 定義構造方法 9 public Student(){} 10 public Student(String id, String name) { 11 super(); 12 this.id = id; 13 this.name = name; 14 } 15 // 定義getter和sett方法 16 public String getId() { 17 return id; 18 } 19 public void setId(String id) { 20 this.id = id; 21 } 22 public String getName() { 23 return name; 24 } 25 public void setName(String name) { 26 this.name = name; 27 } 28 @Override 29 public String toString() { 30 return "Student [id=" + id + ", name=" + name + "]"; 31 } 32 33 }
3.編寫控制層程式碼
1 package cn.baidu.controller;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Controller;
5
6 import cn.baidu.domain.Student;
7 import cn.baidu.service.StudentService;
8
9 @Controller
10 public class StudentController {
11
12 @Autowired
13 private StudentService studentService;
14 public Student queryStudentById(String id){
15 return studentService.queryStudentById(id);
16 }
17
18 }
4.編寫業務層介面
1 package cn.baidu.service;
2
3 import cn.baidu.domain.Student;
4
5 public interface StudentMapper {
6
7 public Student queryOne(String id);
8 }
5.編寫業務層的實現類
1 package cn.baidu.service;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Service;
5
6 import cn.baidu.domain.Student;
7
8 @Service
9 public class StudentServiceImp implements StudentService{
10
11 @Autowired
12 private StudentMapper studentMapper;
13
14 @Override
15 public Student queryStudentById(String id) {
16 return studentMapper.queryOne(id);
17 }
18
19 }
6.編寫studentMapper.xml檔案,把寫入查詢sql語句
1 <?xml version="1.0" encoding="UTF-8"?>
2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
4 <mapper namespace="cn.baidu.mapper.StudentMapper">
5 <select id="queryOne" resultType="cn.baidu.domain.Student">
6 select * from student where id=#{id};
7 </select>
8 </mapper>
7.編寫對應的Mapper配置檔案對應的介面
1 package cn.baidu.mapper;
2
3 import cn.baidu.domain.Student;
4
5 public interface StudentMapper {
6
7 public Student queryOne(String id);
8 }
8.編寫測試類,測試是否整合成功
1 package cn.baidu.test;
2
3 import org.junit.Test;
4 import org.springframework.context.ApplicationContext;
5 import org.springframework.context.support.ClassPathXmlApplicationContext;
6
7 import cn.baidu.controller.StudentController;
8 import cn.baidu.domain.Student;
9
10 public class StudentTest {
11
12 @Test
13 public void test(){
14
15 // 初始化Spring容器
16 ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
17 // 獲取控制層物件
18 StudentController studentController = context.getBean(StudentController.class);
19 // 呼叫控制層方法
20 Student student = studentController.queryStudentById("c");
21 System.out.println(student);
22
23 }
24
25
26 }
9.出現如下結果,說明Mybatis整合成功
1.2.4 將SpringMVC框架整合到Maven中
- 整體思路
1.在pom.xml檔案中匯入SpringMVC框架所需要的依賴資源和外掛
2.在web.xml檔案中建立前端控制器即dispatcherServlet
3.編寫springmvc的核心配置檔案spring-mvc.xml,用於配置檢視解析器和開啟mvc註解
4.如有一些靜態資源的訪問,也可在spring-mvc.xml檔案中配置
- 在pom.xml配置檔案中匯入Tomcat外掛
1.對於web專案,所有的內容都是由Tomcat容器啟動的,所以需要引入Tomcat外掛
1 <!-- 引入Tomcat外掛 -->
2 <plugin>
3 <groupId>org.apache.tomcat.maven</groupId>
4 <artifactId>tomcat7-maven-plugin</artifactId>
5 <version>2.2</version>
6 <!-- Tomcat的啟動配置 -->
7 <configuration>
8 <!-- 埠號訪問路徑預設80埠 -->
9 <port>80</port>
10 <!-- 應用程式的訪問路徑 -->
11 <path>/</path>
12 <!-- 接收資料編解碼的格式為utf-8 -->
13 <uriEncoding>utf-8</uriEncoding>
14 <useBodyEncodingForURI>utf-8</useBodyEncodingForURI>
15 </configuration>
16 </plugin>
注:如果不想引入Tomcat外掛,將專案打成war包扔至外部Tomcat也可以,這裡選擇匯入外掛
- 匯入SpringMVC所需要的依賴
1.SpringMVC需要匯入spring-web和spring-webMVC依賴
2.有時為了將物件轉化成json字串,還需要Jackson依賴
1 <!-- 引入spring-web依賴 -->
2 <dependency>
3 <groupId>org.springframework</groupId>
4 <artifactId>spring-web</artifactId>
5 <version>4.3.7.RELEASE</version>
6 </dependency>
7 <!-- 引入spring-webMVC依賴 -->
8 <dependency>
9 <groupId>org.springframework</groupId>
10 <artifactId>spring-webmvc</artifactId>
11 <version>4.3.7.RELEASE</version>
12 </dependency>
13 <!-- 引入Jackson依賴 -->
14 <dependency>
15 <groupId>com.fasterxml.jackson.core</groupId>
16 <artifactId>jackson-core</artifactId>
17 <version>2.8.8</version>
18 </dependency>
19 <dependency>
20 <groupId>com.fasterxml.jackson.core</groupId>
21 <artifactId>jackson-databind</artifactId>
22 <version>2.8.8</version>
23 </dependency>
- 在Tomcat啟動載入的web.xml檔案中,配置dispacherservlet
1.在dispacherservlet的配置中初始化spring*.xml檔案,使得伺服器載入spring的所有配置內容
2.讓伺服器載入所有配置內容的目的是使得各層的註解生效,web.xml配置如下
1 <!DOCTYPE web-app PUBLIC
2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
3 "http://java.sun.com/dtd/web-app_2_3.dtd" >
4 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
5 xmlns="http://java.sun.com/xml/ns/javaee"
6 xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
7 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
8 <display-name>Archetype Created Web Application</display-name>
9 <!-- 建立dispachersevlet -->
10 <servlet>
11 <servlet-name>springmvc</servlet-name>
12 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
13 <!-- 配置初始化引數,使得Tomcat啟動的時候,載入spring*.xml檔案 -->
14 <init-param>
15 <param-name>contextConfigLocation</param-name>
16 <param-value>classpath:spring*.xml</param-value>
17 </init-param>
18 </servlet>
19 <servlet-mapping>
20 <servlet-name>springmvc</servlet-name>
21 <url-pattern>/*</url-pattern>
22 </servlet-mapping>
23 <welcome-file-list>index.html</welcome-file-list>
24 </web-app>
- 在src/main/resources目錄下編寫spring-mvc.xml檔案
1.檔案中開啟mvc註解生效配置和檢視解析器的配置
1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4 xmlns:aop="http://www.springframework.org/schema/aop"
5 xmlns:tx="http://www.springframework.org/schema/tx"
6 xmlns:p="http://www.springframework.org/schema/p"
7 xmlns:util="http://www.springframework.org/schema/util"
8 xmlns:context="http://www.springframework.org/schema/context"
9 xmlns:mvc="http://www.springframework.org/schema/mvc"
10 xsi:schemaLocation="
11 http://www.springframework.org/schema/beans
12 http://www.springframework.org/schema/beans/spring-beans.xsd
13 http://www.springframework.org/schema/aop
14 http://www.springframework.org/schema/aop/spring-aop.xsd
15 http://www.springframework.org/schema/tx
16 http://www.springframework.org/schema/tx/spring-tx.xsd
17 http://www.springframework.org/schema/util
18 http://www.springframework.org/schema/util/spring-util.xsd
19 http://www.springframework.org/schema/context
20 http://www.springframework.org/schema/context/spring-context.xsd
21 http://www.springframework.org/schema/mvc
22 http://www.springframework.org/schema/mvc/spring-mvc.xsd">
23 <!-- 靜態資源html js css訪問 -->
24 <mvc:resources location="/" mapping="/**"/>
25 <!-- springmvc開啟所有註解功能的標籤 -->
26
27 <mvc:annotation-driven/>
28
29 <!-- 檢視解析的前字尾 -->
30 <bean id="viewResovler"
31 class="org.springframework.web.servlet.view.InternalResourceViewResolver">
32 <!-- 前字尾拼接 -->
33 <property name="prefix" value="views/"/>
34 <property name="suffix" value=".html"></property>
35 </bean>
36 <!-- 以下配置可以解決springmvc返回資料的編解碼問題 -->
37 <bean class="org.springframework.http.converter.StringHttpMessageConverter">
38 <property name="supportMediaTypes" value="text/html;charset=utf-8"></property>
39 </bean>
40 </beans>
- 編寫測試程式碼,測試SpringMvc整合是否成功
1.測試程式碼實現的功能需求:通過瀏覽器,傳遞一個get的請求引數id=a/b/c
2.專案返回一個從資料庫查詢的student物件,頁面的瀏覽器展示
3.在整合mybatis測試程式碼的基礎上,編寫該測試程式碼,把之前的test類刪除
4.修改控制層的程式碼,如下,其他的與mybatis測試程式碼一致,不再展示
1 package cn.baidu.controller;
2
3 import org.springframework.beans.factory.annotation.Autowired;
4 import org.springframework.stereotype.Controller;
5 import org.springframework.web.bind.annotation.RequestMapping;
6 import org.springframework.web.bind.annotation.ResponseBody;
7
8 import cn.baidu.domain.Student;
9 import cn.baidu.service.StudentService;
10
11
12 @Controller
13 public class StudentController {
14
15 @Autowired
16 private StudentService studentService;
17
18 // 以下兩個註解,他們的作用分別是:將以下的方法變成處理器
19 // RequestBody是實現將返回的物件變成json字串,展示在瀏覽器端
20 @RequestMapping("queryStudent")
21 @ResponseBody
22 public Student queryStudentById(String id){
23 return studentService.queryStudentById(id);
24 }
25
26 }
5.啟動當前工程,執行Tomcat外掛,在maven build中建立一個執行命令:goals:tomcat7:run
6.執行debuge/run的maven build的命令,啟動Tomcat出現如下資訊說明啟動成功
7.在瀏覽器測試訪問localhost/queryStudent?id=a,出現如下的結果說明整合成功
8.完成了以上內容說明maven整合的SSM框架已將全部整合完畢
1.3 SSM框架整合總結
1.3.1 SSM框架整合整體配置檔案和目錄結構展示
- 目錄結構如下:
1.磁碟中的目錄結構如下
2.eclipse中的目錄結構如下
- 整體配置檔案
1.pom.xml整體配置檔案
1 <project xmlns="http://maven.apache.org/POM/4.0.0" 2 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> 4 <modelVersion>4.0.0</modelVersion> 5 <groupId>cn.baidu</groupId> 6 <artifactId>UER-ORDER-SSM</artifactId> 7 <packaging>war</packaging> 8 <version>0.0.1-SNAPSHOT</version> 9 <name>UER-ORDER-SSM Maven Webapp</name> 10 <url>http://maven.apache.org</url> 11 <dependencies> 12 <dependency> 13 <groupId>junit</groupId> 14 <artifactId>junit</artifactId> 15 <version>3.8.1</version> 16 <scope>test</scope> 17 </dependency> 18 <dependency> 19 <groupId>org.springframework</groupId> 20 <artifactId>spring-context</artifactId> 21 <version>4.3.7.RELEASE</version> 22 </dependency> 23 <!-- 連線池依賴 --> 24 <dependency> 25 <groupId>com.alibaba</groupId> 26 <artifactId>druid</artifactId> 27 <version>1.0.14</version> 28 </dependency> 29 <!-- jdbc依賴 --> 30 <dependency> 31 <groupId>org.springframework</groupId> 32 <artifactId>spring-jdbc</artifactId> 33 <version>4.3.7.RELEASE</version> 34 </dependency> 35 <!-- mysql依賴 --> 36 <dependency> 37 <groupId>mysql</groupId> 38 <artifactId>mysql-connector-java</artifactId> 39 <version>5.0.8</version> 40 </dependency> 41 <!-- mybatis依賴資源 --> 42 <dependency> 43 <groupId>org.mybatis</groupId> 44 <artifactId>mybatis</artifactId> 45 <version>3.4.5</version> 46 </dependency> 47 <!-- mybatis-spring依賴資源 --> 48 <dependency> 49 <groupId>org.mybatis</groupId> 50 <artifactId>mybatis-spring</artifactId> 51 <version>1.3.1</version> 52 </dependency> 53 <!-- 引入spring-web依賴 --> 54 <dependency> 55 <groupId>org.springframework</groupId> 56 <artifactId>spring-web</artifactId> 57 <version>4.3.7.RELEASE</version> 58 </dependency> 59 <!-- 引入spring-webMVC依賴 --> 60 <dependency> 61 <groupId>org.springframework</groupId> 62 <artifactId>spring-webmvc</artifactId> 63 <version>4.3.7.RELEASE</version> 64 </dependency> 65 <!-- 引入Jackson依賴 --> 66 <dependency> 67 <groupId>com.fasterxml.jackson.core</groupId> 68 <artifactId>jackson-core</artifactId> 69 <version>2.8.8</version> 70 </dependency> 71 <dependency> 72 <groupId>com.fasterxml.jackson.core</groupId> 73 <artifactId>jackson-databind</artifactId> 74 <version>2.8.8</version> 75 </dependency> 76 </dependencies> 77 <build> 78 <finalName>UER-ORDER-SSM</finalName> 79 <!-- source外掛 --> 80 <plugins> 81 <plugin> 82 <groupId>org.apache.maven.plugins</groupId> 83 <artifactId>maven-compiler-plugin</artifactId> 84 <configuration> 85 <source>1.8</source> 86 <target>1.8</target> 87 <encoding>UTF-8</encoding> 88 </configuration> 89 </plugin> 90 <!-- 引入Tomcat外掛 --> 91 <plugin> 92 <groupId>org.apache.tomcat.maven</groupId> 93 <artifactId>tomcat7-maven-plugin</artifactId> 94 <version>2.2</version> 95 <!-- Tomcat的啟動配置 --> 96 <configuration> 97 <!-- 埠號訪問路徑預設80埠 --> 98 <port>80</port> 99 <!-- 應用程式的訪問路徑 --> 100 <path>/</path> 101 <!-- 接收資料編解碼的格式為utf-8 --> 102 <uriEncoding>utf-8</uriEncoding> 103 <useBodyEncodingForURI>utf-8</useBodyEncodingForURI> 104 </configuration> 105 </plugin> 106 </plugins> 107 </build> 108 </project>
2.web.xml整體配置檔案
1 <!DOCTYPE web-app PUBLIC 2 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 3 "http://java.sun.com/dtd/web-app_2_3.dtd" > 4 <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xmlns="http://java.sun.com/xml/ns/javaee" 6 xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 7 xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> 8 <display-name>Archetype Created Web Application</display-name> 9 <!-- 建立dispachersevlet --> 10 <servlet> 11 <servlet-name>springmvc</servlet-name> 12 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 13 <!-- 配置初始化引數,使得Tomcat啟動的時候,載入spring*.xml檔案 --> 14 <init-param> 15 <param-name>contextConfigLocation</param-name> 16 <param-value>classpath:spring*.xml</param-value> 17 </init-param> 18 </servlet> 19 <servlet-mapping> 20 <servlet-name>springmvc</servlet-name> 21 <url-pattern>/*</url-pattern> 22 </servlet-mapping> 23 <welcome-file-list>index.html</welcome-file-list> 24 </web-app>
3.spring.xml整體配置檔案
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemaLocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 24 <!-- 開啟包掃描 --> 25 <context:component-scan base-package="cn.baidu"></context:component-scan> 26 <!-- 開啟註解DI --> 27 <context:annotation-config></context:annotation-config> 28 <!-- 配置資料來源 --> 29 <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"> 30 <!-- 4個屬性,資料庫驅動,URL,使用者名稱和密碼 --> 31 <property name="driverClassName" value="com.mysql.jdbc.Driver"/> 32 <property name="url" value="jdbc:mysql:///mssm"/> 33 <property name="username" value="root"/> 34 <property name="password" value="041X"/> 35 </bean> 36 <!-- 配置sqlSession,動態代理實現持久層sqlSession介面實現的物件 --> 37 <bean id="sqlSession" class="org.mybatis.spring.SqlSessionFactoryBean"> 38 <!-- 繫結資料來源即獲取connection物件 --> 39 <property name="dataSource" ref="dataSource"/> 40 <!-- 載入mybatis的獨立配置檔案 --> 41 <property name="configLocation" value="classpath:mybatis-config.xml"/> 42 <!-- 掃描對映xxxMapper.xml對映檔案 --> 43 <property name="mapperLocations" value="classpath:mapper/*.xml"/> 44 </bean> 45 <!-- 配置mapper介面的掃描配置用於建立mapper介面的實現類 --> 46 <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> 47 <property name="basePackage" value="cn.baidu.mapper"/> 48 </bean> 49 50 </beans>
4.mybatis-config.xml整體配置檔案
1 <?xml version="1.0" encoding="UTF-8" ?> 2 <!DOCTYPE configuration 3 PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 4 "http://mybatis.org/dtd/mybatis-3-config.dtd"> 5 <configuration> 6 <!-- 開啟駝峰命名設定,用於封裝持久層資料物件的內容--> 7 <settings> 8 <setting name="mapUnderscoreToCamelCase" value="true"/> 9 </settings> 10 11 </configuration>
5.spring-mvc.xml整體配置檔案
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:aop="http://www.springframework.org/schema/aop" 5 xmlns:tx="http://www.springframework.org/schema/tx" 6 xmlns:p="http://www.springframework.org/schema/p" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xmlns:context="http://www.springframework.org/schema/context" 9 xmlns:mvc="http://www.springframework.org/schema/mvc" 10 xsi:schemaLocation=" 11 http://www.springframework.org/schema/beans 12 http://www.springframework.org/schema/beans/spring-beans.xsd 13 http://www.springframework.org/schema/aop 14 http://www.springframework.org/schema/aop/spring-aop.xsd 15 http://www.springframework.org/schema/tx 16 http://www.springframework.org/schema/tx/spring-tx.xsd 17 http://www.springframework.org/schema/util 18 http://www.springframework.org/schema/util/spring-util.xsd 19 http://www.springframework.org/schema/context 20 http://www.springframework.org/schema/context/spring-context.xsd 21 http://www.springframework.org/schema/mvc 22 http://www.springframework.org/schema/mvc/spring-mvc.xsd"> 23 <!-- 靜態資源html js css訪問 --> 24 <mvc:resources location="/" mapping="/**"/> 25 <!-- springmvc開啟所有註解功能的標籤 --> 26 27 <mvc:annotation-driven/> 28 29 <!-- 檢視解析的前字尾 --> 30 <bean id="viewResovler" 31 class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 32 <!-- 前字尾拼接 --> 33 <property name="prefix" value="views/"/> 34 <property name="suffix" value=".html"></property> 35 </bean> 36 <!-- 以下配置可以解決springmvc返回資料的編解碼問題 --> 37 <bean class="org.springframework.http.converter.StringHttpMessageConverter"> 38 <property name="supportMediaTypes" value="text/html;charset=utf-8"></property> 39 </bean> 40 </beans>
6.xxxMapper.xml整體配置檔案,此配置檔案多變,以下只是範例
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" 3 "http://mybatis.org/dtd/mybatis-3-mapper.dtd"> 4 <mapper namespace="cn.baidu.mapper.StudentMapper"> 5 <select id="queryOne" resultType="cn.baidu.domain.Student"> 6 select * from student where id=#{id}; 7 </select> 8 </mapper>
1.3.2 SSM整合易錯點
- 錯誤除錯思路
1.在做整合的時候不免出現各種各樣的錯誤,大多都是不細心造成的
2.所以在遇見錯誤的時候,保持耐心,慢慢捋一捋思路
3.以下是本人除錯錯誤的一些思路,僅供參考
-
- SSM框架整合出現異常,一般都是由前一個異常引起後面異常的丟擲,所以檢視異常的時候,檢視報錯的第一句(第一句內容比較長)
- 例如報如下錯誤:出現異常按照以下紅色字型標識往下找,通常找到最後一行即可找到出錯導致的原因,或者某些關鍵字,按照其提示的關鍵字,自己到對應的地方仔細檢查,排查錯誤
-
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentController': Unsatisfied dependency expressed through field 'studentService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentServiceImp': Unsatisfied dependency expressed through field 'studentMapper'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'studentMapper' defined in file [E:\workspace_v1\ORDER-USER-SSM\target\classes\cn\baidu\mapper\StudentMapper.class]: Unsatisfied dependency expressed through bean property 'sqlSessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sqlSession' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: 'file [E:\workspace_v1\ORDER-USER-SSM\target\classes\mapper\studentMapper.xml]'; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias 'Student'. Cause: java.lang.ClassNotFoundException: Cannot find class: Student
-
錯誤原因:配置檔案找不到Student類,說明在填寫配置檔案全路徑可能寫錯了
- 解決方法:重新對Student類進行檢查,檢查配置檔案中Student類的路徑是否寫正確
- 整合過程可能出現的普遍性錯誤
1.在新增pom內容的時候,工程可能會出現一個紅叉子,檢視problem的內容標籤,會報如下錯誤
-
- Description Resource Path Location TypeProject configuration is not up-to-date with pom.xml. Select:Maven->Update Project... from the project context menu or use QuickFix. ORDER-USER-SSM line1 Maven Configuration Problem
- 出錯原因:每當修改pom.xml檔案時,工程可能會出現一個紅叉子,檢視problem標籤會報出以上的錯誤
- 解決方法:更新maven專案即可