@slientStrom 2017-08-07T17:19:29.000000Z 字数 7751 阅读 644

spring整合velocity

maven，spring，velocity,restful
此次整合没有使用数据库。只包含controller层和实体类。
项目结构

一.pom.xml 定义

<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.exapme</groupId>
  <artifactId>springMvc</artifactId>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>springMvc Maven Webapp</name>
  <url>http://maven.apache.org</url>
  <properties>
    <springVersion>4.3.6.RELEASE</springVersion>
    <jacksonVersion>2.8.7</jacksonVersion>
  </properties>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!--spring的基本包 -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context-support</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${springVersion}</version>
    </dependency>
    <!-- veloctiy 基本包-->
    <dependency>
      <groupId>org.apache.velocity</groupId>
      <artifactId>velocity</artifactId>
      <version>1.7</version>
    </dependency>
    <dependency>
      <groupId>org.apache.velocity</groupId>
      <artifactId>velocity-tools</artifactId>
      <version>2.0</version>
    </dependency>
    <!--json包 -->
        <dependency>
          <groupId>com.fasterxml.jackson.core</groupId>
          <artifactId>jackson-core</artifactId>
          <version>${jacksonVersion}</version>
        </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>${jacksonVersion}</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>${jacksonVersion}</version>
    </dependency>
  </dependencies>
  <build>
    <finalName>springMvc</finalName>
  </build>
</project>

二. 资源文件的配置

2.1 context.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:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <context:component-scan base-package="com.learn"></context:component-scan>
    <mvc:annotation-driven />
</beans>

2.2content-servlet配置

<?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:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       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/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd">
    <context:component-scan base-package="com.learn"></context:component-scan>
    <mvc:annotation-driven />
    <!-- 将ResponseBody(rest返回的对象转换为json)-->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </list>
        </property>
    </bean>
    <bean id="velocityConfig" class="org.springframework.web.servlet.view.velocity.VelocityConfigurer">
        <property name="resourceLoaderPath" value="/WEB-INF/pages/"/>
        <property name="configLocation" value="classpath:velocity.properties"/>
    </bean>
    <!-- 配置视图的显示 -->
    <bean id="ViewResolver" class="org.springframework.web.servlet.view.velocity.VelocityViewResolver">
        <property name="suffix" value=".html" /><!-- 视图文件的后缀名 -->
        <property name="contentType" value="text/html;charset=UTF-8" />
    </bean>
</beans>

2.3web.xml配置

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
  <display-name>Archetype Created Web Application</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:context/context.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>dispatcher</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:context/context-servlet.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*.htm</url-pattern>
  </servlet-mapping>
  <servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*.json</url-pattern>
  </servlet-mapping>
</web-app>

三.controller编写。

package com.learn.controller;
import com.learn.controller.res.UserRes;
import com.learn.entity.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import java.util.ArrayList;
import java.util.List;
@Controller
public class UserController {
   //视图跳转
    @RequestMapping("index.htm")
    public String homeView(){
        return "index";
    }
    //数据
    @RequestMapping("index.json")
    @ResponseBody
    public User getUser(){
        User user=new User();
        user.setName("小米");
        user.setAge(5);
        return user;
    }
    @RequestMapping("searchAllUser.json")
    @ResponseBody
    public List<User> searchAllUser(){
        List<User> users=new ArrayList<User>();
        User user=new User();
        user.setAge(5);
        user.setName("小米");
        users.add(user);
        User user1=new User();
        user1.setName("京东");
        user.setAge(9);
        users.add(user1);
        return users;
    }
}

四.访问index.json

返回数据:{"name":"小米","age":5}。配置正常。

五。ajax访问数据。

定义index.html文件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <script src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js"></script>
    <script type="application/javascript" src="#springUrl('/script/index.js')"></script>
    <style type="text/css" >
        *{
            margin: 0;
            padding: 0;
        }
        .user{
            width: 80%;
            height: 30px;
            margin: 0 auto;
        }
        .left{
            float: left;
            width: 50%;
            height: 30px;
        }
        .right{
            float: left;
            width: 50%;
            height: 30px;
        }
    </style>
    <title>主页</title>
</head>
<body>
    <div class="user">
    </div>
    <div class="userInfo"></div>
</body>
</html>

定义index.js文件

$(function () {
    $.ajax({
        type: "post",
        dataType: "json",
        url: 'index.json',
        success: function (data) {
            var htmlStr="<div class='left'>"+data.name+"</div>"
            htmlStr+="<div class='right'>"+data.age+"</div>"
            $(".user").html(htmlStr);
            $(".userInfo").html(data.name+"年龄："+data.age);
        },
        error: function () {
            alert("请求失败");
        }
    });
});

访问index.htm
界面显示：
小米 5
小米年龄：5
源代码