使用IDEA的gradle整合spring+springmvc+mybatis 采用javaconfig配置

1.在上篇博客里讲述了spring+mybatis的整合，这边在上篇的基础上进行开发。

　　上篇博客链接http://www.cnblogs.com/huangyichun/p/6149946.html

2.项目总体架构

　　

　　（1）首先修改build.gradle文件，添加springmvc的依赖

　　　　

group 'com.huang'
version '1.0-SNAPSHOT'

apply plugin: 'java'
apply plugin: 'war'
apply plugin: 'eclipse'
apply plugin: 'idea'

sourceCompatibility = 1.5

repositories {
    maven { url 'http://maven.springframework.org/release' }
    maven { url 'http://maven.springframework.org/milestone' }
    maven { url 'http://maven.springframework.org/snapshot' }
    maven { url 'http://download.java.net/maven/2' }
    mavenCentral()
}

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
    testCompile"org.springframework:spring-test:${springVersion}"
    testCompile "com.github.stefanbirkner:system-rules:${systemRulesVersion}"
    compile "org.springframework:spring-core:$springVersion"
    compile "org.springframework:spring-context:$springVersion"
    compile "org.springframework:spring-jdbc:$springVersion"
    compile "org.mybatis:mybatis:$mybatisVersion"
    compile "org.mybatis:mybatis-spring:$mybatis_spring"
    compile "commons-dbcp:commons-dbcp:$commons_dbcp"
    compile "mysql:mysql-connector-java:$mysql_Java"
    compile "log4j:log4j:$log4jVersion"
    compile "com.h2database:h2:$h2Version"
    compile "javax.inject:javax.inject:1"
    compile "net.sf.ehcache:ehcache:$ehcacheVersion"
    compile "net.sf.ehcache:ehcache-jcache:$ehcacheJCacheVersion"
    compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.21'
    compile "org.springframework:spring-webmvc:$springVersion"
    compile "org.apache.commons:commons-lang3:$commonsLangVersion"
    compile "javax.servlet:jstl:$jstlVersion"
    providedCompile "javax.servlet:javax.servlet-api:$servletApiVersion"
    providedCompile "javax.servlet.jsp:jsp-api:$jspApiVersion"
    providedCompile "javax.el:javax.el-api:$jspElVersion"
    // https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12
    compile group: 'org.slf4j', name: 'slf4j-log4j12', version: '1.7.21'

}

　　（2）添加配置文件，采用javaconfig

　　

　　直接上代码:

　　

package com.huang.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.context.annotation.Import;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

/**
 * ComponentScan的属性 
　　basePackageClasses：对basepackages()指定扫描注释组件包类型安全的替代。
     excludeFilters：指定不适合组件扫描的类型。
    includeFilters：指定哪些类型有资格用于组件扫描。
     lazyInit：指定是否应注册扫描的beans为lazy初始化。
     nameGenerator：用于在Spring容器中的检测到的组件命名。
    resourcePattern：控制可用于组件检测的类文件。
    scopedProxy：指出代理是否应该对检测元件产生，在使用过程中会在代理风格时尚的范围是必要的。
    scopeResolver：用于解决检测到的组件的范围。
     useDefaultFilters：指示是否自动检测类的注释 @Component@Repository, @Service, or @Controller 应启用。
    value：basePackages()别名
 */
@Configuration
@ComponentScan(basePackages = {"com.huang.service"},
    excludeFilters = {@ComponentScan.Filter(type = FilterType.ANNOTATION, value = EnableWebMvc.class)})
@Import(DataConfig.class)
public class RootConfig {
}

package com.huang.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;

@Configuration
@EnableWebMvc
@ComponentScan("com.huang.controller")
public class WebConfig extends WebMvcConfigurerAdapter{

    //配置jsp视图
    @Bean
    public ViewResolver viewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        resolver.setExposeContextBeansAsAttributes(true);
        return resolver;
    }

    //配置静态资源处理
    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();//将静态资源的请求转发到servlet容器中默认的servlet上
    }
}

package com.huang.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[]{RootConfig.class};
    }

    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[]{WebConfig.class};
    }

    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

　　（3）编写service层代码

　　　　

package com.huang.service;

import com.huang.domain.User;
import java.util.List;

public interface UserService {

    List<User> getUserList();

    User getUserById(String userId);

    void updateUserEmailById(String userId, String sex);

    void deleteUserById(String userId);

    void insertUser(User user);
}

package com.huang.service.impl;

import com.huang.domain.User;
import com.huang.mapper.UserMapper;
import com.huang.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
@Service
public class UserServiceImpl implements UserService {

    @Autowired
    UserMapper userMapper;
    public List<User> getUserList() {
        List<User> list = userMapper.getUserList();
        return list;
    }

    public User getUserById(String userId) {
        return userMapper.getUserById(userId);
    }

    public void updateUserEmailById(String userId, String sex) {
        userMapper.updateUserEmailById(userId, sex);
    }

    public void deleteUserById(String userId) {
        userMapper.deleteUserById(userId);
    }

    public void insertUser(User user) {
        userMapper.insertUser(user);
    }
}

　　　　

　　（4）编写controller层代码　

package com.huang.controller;

import com.huang.domain.User;
import com.huang.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import java.util.List;

@Controller
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping(value = "/getAllUser", method = RequestMethod.GET)
    public String getUserList(Model model){
        List<User> list = userService.getUserList();
        model.addAttribute("list",list);
        return "showUsers";
    }

}

　　（5）修改index.jsp代码

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>$Title$</title>
  </head>
  <body>
    <a href="/getAllUser">获取所有的user</a>
  </body>
</html>

　　

　　（6）在WEB-INF下的views创建showUsers.jsp

　　

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>显示所有的用户</title>
</head>
<body>
    <form>
        <table >
            <c:forEach var="user" items="${list}">
                <tr>
                    <td>${user.userId}</td>
                    <td>${user.name}</td>
                    <td>${user.depId}</td>
                    <td>${user.sex}</td>
                </tr>
            </c:forEach>
        </table>
    </form>

</body>
</html>

　

　　　(7)启动tomcat，打开index.jsp页面，点击链接显示：