SpringMvc基础练习

1.框架
java web 开发中的 概念

Java模拟图

2. 基础程序

基础项目构成 输出结果

Controller--类:
package cn.nokia.controller;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class HellowController {

@RequestMapping("index")
public @ResponseBody List doindex() {
// TODO Auto-generated method stub
List<Map<String, String> > list = new ArrayList<>();
Map<String, String> map = new HashMap<>();

  map.put("age", "24"); 
  map.put("name", "邹伟");
  list.add(map);  
  return list;

}}

Mapper-接口：

package cn.nokia.mapper;

import java.util.List;
import java.util.Map;

public interface kpimapper {
List<Map<String,String>>selectall();
List<Map<String,String>>selectkpi();
}

Service--接口：

package cn.nokia.service;

import java.util.List;

public interface HellowService {
public List doHello();
}

Service impl-类：

package cn.nokia.service.impl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.stereotype.Service;
import cn.nokia.service.HellowService;
@Service("helloservice")
public class HellowServiceImpl implements HellowService{
@Override
public List doHello(){
List<Map<String, String>> list = new ArrayList<>();
Map<String,String> map = new HashMap<>();
map.put("name", "zouwei");
map.put("age", "24");
list.add(map);
return list;
}
}