SpringMVC学习（三）——基于注解配置的springMVC项目
2024-08-29 21:01:41
可运行的附件地址：http://files.cnblogs.com/files/douJiangYouTiao888/springWithAnnotation.zip
项目说明：
作者环境：maven3+jdk1.8+spring4
项目结构：
父pom配置：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<!-- 基础组件模块，定义各种公用的组件 -->
<modelVersion>4.0.0</modelVersion>
<groupId>com.wang</groupId>
<artifactId>basicmodule</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>basicmodule</name>
<url>http://maven.apache.org</url>
<!-- 常量属性 -->
<properties>
<!-- 编码集 -->
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- spring版本 -->
<springframework.version>4.3.7.RELEASE</springframework.version>
</properties>
<!-- 模块定义 -->
<dependencyManagement>
<dependencies>
<!-- spring模块 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<!-- <scope>provide</scope> -->
</dependency>
<!-- jstl，需要引入jstl.jar和standard.jar -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- <dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provide</scope>
</dependency> -->
</dependencies>
</dependencyManagement> </project>
pom配置：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.wang</groupId>
<artifactId>springWithAnnotation</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>springWithAnnotation Maven Webapp</name>
<url>http://maven.apache.org</url>
<!-- 父模块，基础模块 -->
<parent>
<groupId>com.wang</groupId>
<artifactId>basicmodule</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<!-- servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- jstl -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
</dependencies>
<build>
<finalName>springWithAnnotation</finalName>
</build>
</project>
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<!--
源码：spring-web.jar
功能：字符集过滤器，设置编码集为UTF-8，解决POST的中文乱码问题。
参数说明：
encoding：request的编码集(request.setCharacterEncoding("UTF-8"))
forceEncoding：默认为false设置为true，response的编码集也强制转变成UTF-8(response.setCharacterEncoding("UTF-8"))
-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--
源码：spring-web.jar
默认配置：/WEB-INF/${servlet-name}-servlet.xml，即/WEB-INF/springmvc.xml
覆盖默认配置：初始化参数：contextConfigLocation，参数多个值使用逗号隔开，如：a.xml,b.xml
-->
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:conf/springmvc-annotationconfig.xml</param-value>
</init-param>
<!-- 容器初始化加载此servlet -->
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<!--
一般有以下写法：
*.do 拦截固定格式的请求
/ rest风格的写法：拦截所有资源，需要针对静态资源做单独处理
/* 错误写法：会在处理完请求后拦截jsp导致404错误
-->
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
springmvc核心配置文件：springmvc-annotationconfig.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">
<!-- 扫描的包 -->
<context:component-scan base-package="com.wang"></context:component-scan>
<!-- 自动装载注解的配置HandlerMapping和HandlerAdapter -->
<mvc:annotation-driven/> <!-- 视图解析类类 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/jsp"/>
<property name="suffix" value=".jsp"/>
</bean>
</beans>
java类：
package com.wang.action; import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;
import com.wang.service.WangService; @Controller
public class WangAction { @Autowired
private WangService wangService;
@RequestMapping("/sb.do")
public ModelAndView doTest(@RequestParam(value="name",defaultValue="wang")String aaa,@RequestParam("age")int bbb){
System.err.println("name:" + aaa + ",age:" + bbb);
Map<String, Object> maps = new HashMap<String, Object>();
String result = wangService.doTest();
maps.put("a", result);
return new ModelAndView("/index",maps);
}
}
package com.wang.service; import org.springframework.stereotype.Service; @Service
public class WangService { public String doTest(){
return "wly";
}
}
测试URL：
http://localhost:8088/sb.do?name=wly&age=500
OK，大功告成~
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