配置文件

<dependencies>
        <dependency>
            <groupId>commons-logging</groupId>
            <artifactId>commons-logging</artifactId>
            <version>1.2</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.8.2</version>
        </dependency>

        <dependency>
            <groupId>servlet.api</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>

        <dependency>
            <groupId>json.lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.3</version>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.8.5</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.8.5</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.8.5</version>
        </dependency>

        <dependency>
            <groupId>commons-lang</groupId>
            <artifactId>commons-lang</artifactId>
            <version>2.6</version>
        </dependency>

        <dependency>
            <groupId>commons-beanutils</groupId>
            <artifactId>commons-beanutils</artifactId>
            <version>1.8.3</version>
        </dependency>

        <dependency>
            <groupId>ezmorph</groupId>
            <artifactId>ezmorph</artifactId>
            <version>1.0.6</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.6</source>
                    <target>1.6</target>
                    <encoding>UTF-8</encoding>
                    <compilerArguments>
                        <extdirs>lib</extdirs>
                    </compilerArguments>
                </configuration>
            </plugin>
        </plugins>
    </build>




<?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.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--指明 controller 所在包，并扫描其中的注解-->
    <context:component-scan base-package="controller"></context:component-scan>

    <!-- 开启注解 -->
    <mvc:annotation-driven/>


    <context:annotation-config/>

   <!-- 采用<mvc:default-servlet-handler />

    在springMVC-servlet.xml中配置<mvc:default-servlet-handler />后，会在Spring MVC上下文中定义一个org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler，它会像一个检查员，对进入DispatcherServlet的URL进行筛查，如果发现是静态资源的请求，就将该请求转由Web应用服务器默认的Servlet处理，如果不是静态资源的请求，才由DispatcherServlet继续处理。

    一般Web应用服务器默认的Servlet名称是"default"，因此DefaultServletHttpRequestHandler可以找到它。如果你所有的Web应用服务器的默认Servlet名称不是"default"，则需要通过default-servlet-name属性显示指定：

    <mvc:default-servlet-handler default-servlet-name="所使用的Web服务器默认使用的Servlet名称" />-->
    <mvc:default-servlet-handler/>


    <!-- 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">
        <property name="messageConverters">
            <list>
                <bean
                        class="org.springframework.http.converter.StringHttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/plain;charset=UTF-8</value>
                            <value>text/html;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
                <bean id="mappingJacksonHttpMessageConverter"
                      class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>application/json;charset=UTF-8</value>
                            <value>text/html;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </list>
        </property>
    </bean>


    <bean id="StatDataOfGroupService" class="serviceImpl.StatDataOfGroupServiceImpl" lazy-init="true" scope="prototype"></bean>

    <!--<context:property-placeholder location="classpath:db.properties" />-->


</beans>






MainController


package controller;

import net.sf.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.*;
import service.IStatDataOfGroupService;
import utils.BeanUtil;

import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by dzkan on 2016/3/8.
 */
@Controller
@RequestMapping("/user")
public class MainController {
  /*注解方式加载bean*/
   @Autowired
    IStatDataOfGroupService statDataOfGroupService;

//   public IStatDataOfGroupService statDataOfGroupService = null;

   /* @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index() {
        return "index";
    }*/

    @RequestMapping(value = "/admin/users", method = RequestMethod.POST)
    public String getUsers(ModelMap modelMap) {
        return "admin/users";
    }

    // get请求，访问添加用户 页面
    @RequestMapping(value = "/admin/users/add.do", method = RequestMethod.GET)
    public String addUser() {
        // 返回 admin/addUser.jsp页面
        return "admin/addUser";
    }

/*  @RequestMapping(value = { "/delDepartment.do" }, method = { RequestMethod.POST})
    @ResponseBody
    public List<Student> test(List<Student> students) {
        List<Student> list = new ArrayList<Student>();

        Student stu = new Student();
        stu.setStuId(1);
        stu.setStuName("张三dd");
        stu.setStuSex("d");
        list.add(stu);

        Student stu2 = new Student();
        stu2.setStuId(2);
        stu2.setStuName("李四");
        stu2.setStuSex("女");
        list.add(stu2);

        return list;  //直接返回list对象
    }*/

    @RequestMapping(value = { "/delDepartment.do" }, method = { RequestMethod.POST})
    @ResponseBody
    public ReplyInfo delDepartment(@RequestBody List<Student> students, HttpServletResponse res) {
        //@RequestBody JSONObject body, HttpServletResponse res
        ReplyInfo replyInfo = new ReplyInfo();
        List<Student> list = new ArrayList<Student>();
        Student stu = new Student();
        stu.setStuId(1);
        stu.setStuName("张三1");
        stu.setStuSex("man");
        list.add(stu);

        Student stu2 = new Student();
        stu2.setStuId(2);
        stu2.setStuName("李四");
        stu2.setStuSex("女");
        list.add(stu2);
        replyInfo.setData(list);
        return replyInfo;  //直接返回list对象
    }

    @RequestMapping(value = { "/delDepartment" }, method = { RequestMethod.POST})
    @ResponseBody
    public ReplyInfo delDepartment(@RequestBody Object obj, HttpServletResponse res) {
        //@RequestBody JSONObject body, HttpServletResponse res
        ReplyInfo replyInfo = new ReplyInfo();
        List<Student> list = new ArrayList<Student>();
        Student stu = new Student();
        stu.setStuId(1);
        stu.setStuName("张三2");
        stu.setStuSex("man");
        list.add(stu);

        Student stu2 = new Student();
        stu2.setStuId(2);
        stu2.setStuName("李四");
        stu2.setStuSex("女");
        list.add(stu2);
        replyInfo.setData(list);

//      statDataOfGroupService = (IStatDataOfGroupService) BeanUtil.getBean("StatDataOfGroupService");
        String sId = statDataOfGroupService.getPowerStationById("s01");
        return replyInfo;  //直接返回list对象
    }

    @RequestMapping(value = "/add.do", method = RequestMethod.POST)
    @ResponseBody
    public Map<String, String> addUser(@RequestBody JSONObject  model) {
        Map<String, String> map = new HashMap<String, String>(1);
        map.put("success", "true");
        return map;
    }
}






Student

public class Student {
    private int stuId;
    private String stuName;
    private String stuSex;

    public int getStuId() {
        return stuId;
    }
    public void setStuId(int stuId) {
        this.stuId = stuId;
    }
    public String getStuName() {
        return stuName;
    }
    public void setStuName(String stuName) {
        this.stuName = stuName;
    }
    public String getStuSex() {
        return stuSex;
    }
    public void setStuSex(String stuSex) {
        this.stuSex = stuSex;
    }




package service;

/**
 * Created by p00100 on 2017/3/30.
 */
public  interface IStatDataOfGroupService {
    /**
     * 查询电站对象
     * @param sId 为null 则查询所有电站
     */

    public String getPowerStationById(String sId);

}




package serviceImpl;

import org.springframework.stereotype.Service;
import service.IStatDataOfGroupService;

/**
 * Created by p00100 on 2017/3/30.
 */
@Service
public class StatDataOfGroupServiceImpl implements  IStatDataOfGroupService{
    public String getPowerStationById(String sId){
        String  a = "s0001";
        return a;
    }
}