springMVC(基于注解)

学了好久的springMVC，始终没有头绪，原因是xml配置太繁琐，现在把他整理出来（maven版本）

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name> <!-- 这里在配成spring,下边也要写一个名为spring-servlet.xml的文件，主要用来配置它的controller -->
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
spring_servlet.xml（一定要有handlermapping和viewresolver）
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- 把标记了@Controller注解的类转换为bean -->
<context:component-scan base-package="controller" />
<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" /> <!-- handlerMapping -->

<!-- 对模型视图名称的解析，即在模型视图名称添加前后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"
p:prefix="/view/" p:suffix=".jsp" />

</beans> pom.xml

<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.langchao</groupId>
<artifactId>Spring_mvc</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>Spring_mvc Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.9.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.1.6.RELEASE</version>
</dependency>
</dependencies>
<build>
<finalName>Spring_mvc</finalName>
</build>
</project>

java代码



package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import Entity.User;
import Service.UserService;

@Controller
@RequestMapping("hello.do")
public class UserController {

@RequestMapping(params="add")
public ModelAndView add(){
User user=new User();
user.setId("001");
user.setUserName("gaohui");
user.setPass("123456");
new UserService().addUser(user);
ModelAndView model=new ModelAndView("hello");
return model;
}

}

package Dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

public class JdbcTool {
static Connection conn;
static Statement stmt;
static{
try {
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/demo", "root", "root");
stmt=conn.createStatement();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
public void execute(String sql) throws SQLException{
stmt.execute(sql);
}
public void close() throws SQLException{
if(conn!=null){
conn.close();
}
if(stmt!=null){
stmt.close();
}
}

}

package Entity;

public class User {

private String id;
private String userName;
private String pass;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
}

package Service;

import java.sql.SQLException;

import Dao.JdbcTool;
import Entity.User;

public class UserService {
JdbcTool tool=new JdbcTool();
/*
* 添加用户
*/
public void addUser(User user){
String sql="insert into user (id,username,pass) value('"+user.getId()+"','"+user.getUserName()+"','"+user.getUserName()+"')";
try {
tool.execute(sql);
} catch (SQLException e) {
e.printStackTrace();
}
}

}

这里只是个大概，更多细节，以后会贴出