springMVC入门二

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一、准备工作

参考springMVC入门一，搭建maven项目如下：

前台结构如下：

项目介绍：使用springMVC实现前后台数据交互，例如controller返回json，页面传入pojo

二、具体代码

controller类：HelloWorldController

package com.cn.project.controller;import java.util.ArrayList;
import java.util.List;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import com.cn.common.Result;
import com.cn.project.entity.TProjectInfo;@Controller
public class HelloWorldController { /**
* 返回json
* 1、@ResponseBody
* 2、引入 jackson包
* 3、配置spring json转换器、或者spring驱动注解 <mvc:annotation-driven/>
* @param model
* @return
*/
@RequestMapping("/hello1") //访问http://localhost:8080/HelloSpringMVC/hello1
@ResponseBody
public List<TProjectInfo> query(Model model){ List<TProjectInfo> projectInfos = new ArrayList<TProjectInfo>();
projectInfos.add(new TProjectInfo("1", "项目1"));
projectInfos.add(new TProjectInfo("2", "项目2"));
projectInfos.add(new TProjectInfo("3", "项目3"));
projectInfos.add(new TProjectInfo("4", "项目4"));
projectInfos.add(new TProjectInfo("5", "项目5")); return projectInfos; //前台接收：response.data
} /**
* 封装返回值与自定义状态码
* @param model
* @return
*/
@RequestMapping("/hello2") //访问http://localhost:8080/HelloSpringMVC/hello2
@ResponseBody
public Result query2(Model model){ List<TProjectInfo> projectInfos = new ArrayList<TProjectInfo>();
projectInfos.add(new TProjectInfo("1", "项目1"));
projectInfos.add(new TProjectInfo("2", "项目2"));
projectInfos.add(new TProjectInfo("3", "项目3"));
projectInfos.add(new TProjectInfo("4", "项目4"));
projectInfos.add(new TProjectInfo("5", "项目5")); return Result.ok().put("data", projectInfos); //前台接收：response.data.data
} /**
* 前台传入pojo
* 传入的是pojo的json字符串
* 如data : angular.toJson($scope.project)
* data:'{"projectNo":"11","projectName":"22"}'
* data:JSON.stringify($scope.project)
* data:$scope.project
*
* 注意：@RequestBody json转pojo，pojo一定要有空的构造函数，否则，前台找不到路径
* "Content-Type": "application/json; charset=UTF-8"
* @param projectInfo
* @return
*/
@RequestMapping("/insert")
@ResponseBody
public void insert(@RequestBody TProjectInfo projectInfo){ System.out.println(projectInfo); } /**
* 前台传入 json字符串
* data:$.param({jsonStr:JSON.stringify($scope.project)}) //后台接收String jsonStr
*
* 注意：content-type:application/x-www-form-urlencoded
*
* @param jsonStr
*/
@RequestMapping("/insert2")
@ResponseBody
public void insert2(String jsonStr){ System.out.println(jsonStr); } /**
* 返回字符串
* @param model
* @return
*/
@RequestMapping("/hello") //访问http://localhost:8080/HelloSpringMVC/hello
public String hay(Model model){
model.addAttribute("greeting","hello Spring MVC"); //jsp页面接收 ${greeting} return "index"; //跳转到 index.html 页面需要遵循 spring视图配置
}
}

html页面：project.html

<!DOCTYPE html>
<html>
<head>

<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Insert title here</title><link href="../css/bootstrap.min.css" rel="stylesheet"></head>
<body data-ng-app="projectApp" data-ng-controller="projectCtrl">
<div class="container-fluid" ng-if="cx">

<ol class="breadcrumb">
<li><a href="#">Home</a></li>
<li><a href="#">人员管理</a></li>
<li class="active">人员查询</li>
</ol>

<form class="form-inline" role="form">
<div class="form-group">
<label for="" class="control-label">姓名：</label> <input type="text"
class="form-control" id="" placeholder="" ng-model="usreName">
</div>
<div class="form-group">
<label for="" class="control-label">身份证号：</label> <input type="text"
class="form-control" id="" placeholder="" ng-model="passPort">
</div>
<div class="form-group">
<button type="button" class="btn btn-success" ng-click="query()">查询</button>
<button type="reset" class="btn btn-success" ng-click="reset()">重置</button>
</div>
<div class="form-group">
<button type="button" class="btn btn-success" ng-click="add()">新增</button>
</div>
</form> 
<div class="row-fluid">
<div class="span12">
<table class="table">
<thead>
<tr>
<th>编号</th>
<th>项目号</th>
<th>项目名称</th>
</tr>
</thead>
<tbody>
<tr data-ng-repeat="x in dataItems" repeat-finish href="#">
<td ng-bind="$index + 1"></td>
<td>
<div ng-bind=x.projectNo></div>
</td>
<td>
<div ng-bind=x.projectName></div>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div> 
<div ng-if="xz">
<form class="form-inline" role="form">
<div class="form-group">
<label for="" class="control-label">项目号：</label> <input type="text"
class="form-control" id="" placeholder="" ng-model="project.projectNo">
</div>
<div class="form-group">
<label for="" class="control-label">项目名称：</label> <input type="text"
class="form-control" id="" placeholder="" ng-model="project.projectName">
</div> </form>
<div>
<div class="form-group">
<button type="button" class="btn btn-success" ng-click="save()">保存</button>
</div>
</div>
</div></body><script src="../js/lib/jquery.min.js"></script>
<script src="../js/lib/bootstrap.min.js"></script>
<script src="../js/lib/angular-1.3.1.min.js"></script><script>
var app = angular.module('projectApp', []);
app.controller('projectCtrl',function($scope,$http) { //变量设置
$scope.cx = true;
$scope.project={}; //保证修改页面$scope.project能取到值 //查询方法
$scope.query = function() {
$http(
{
method : 'POST',
headers : {
"Content-Type": "application/x-www-form-urlencoded; charset=UTF-8" //或者application/json x-www-form-urlencoded
},
url : '../hello1',
data :''
})
.then(
function successCallback(response) {
debugger;
console.log(response);
$scope.dataItems = response.data;
},
function errorCallback(response) {
debugger;
alert("查询失败");
});
} $scope.add = function(){
$scope.cx = false;
$scope.xz = true;
} //保存方法
$scope.save = function() {
debugger;
$http(
{
method : 'POST',
headers : {
"Content-Type": "application/json; charset=UTF-8" //或者application/json
},
url : '../insert',
//data : angular.toJson($scope.project) //"{"projectNo":"11","projectName":"22"}"
//data:'{"projectNo":"11","projectName":"22"}'
//data:$.param({jsonStr:JSON.stringify($scope.project)}) //后台接收String jsonStr,注意：content-type:application/x-www-form-urlencoded
//data:JSON.stringify($scope.project), //"{"projectNo":"11","projectName":"22"}"
data:$scope.project
})
.then(
function successCallback(response) {
debugger;
alert("新增成功");
},
function errorCallback(response) {
debugger;
alert("新增失败");
});
}});
</script></html>

springMVC配置：spring-mvc-servlet.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:p="http://www.springframework.org/schema/p"
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-4.1.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"> 
<context:component-scan base-package="com.cn"/> 
<mvc:default-servlet-handler />
 
<mvc:annotation-driven/> 


 
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/html/" /> 
<property name="suffix" value=".html" /> 
</bean>
</beans>

web.xml配置：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd" id="WebApp_ID"> <display-name>HelloSpringMVC</display-name> <servlet>

<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>   <load-on-startup>1</load-on-startup>
</servlet> 
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> 
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/root-context.xml</param-value>
</context-param> 
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener> 
<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>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list></web-app>

controller返回封装类：Result.java

package com.cn.common;import java.util.HashMap;
import java.util.Map;/**
* 返回数据封装类
*
*/
public class Result extends HashMap<String, Object> {
private static final long serialVersionUID = 1L; public Result() {
this.put("code", 0);
} public static Result error() {
return error(500, "未知异常，请联系管理员");
} public static Result error(String msg) {
return error(500, msg);
} public static Result error(int code, String msg) {
Result r = new Result();
r.put("code", code);
r.put("msg", msg);
return r;
} public static Result ok(String msg) {
Result r = new Result();
r.put("msg", msg);
return r;
} public static Result ok(Map<String, Object> map) {
Result r = new Result();
r.putAll(map);
return r;
} public static Result ok() {
return new Result();
} public Result put(String key, Object value) {
super.put(key, value);
return this;
}
}