这里有新鲜出炉的精品教程,程序狗速度看过来!
Spring是什么呢?首先它是一个开源的项目,而且目前非常活跃;它是一个基于IOC和AOP的构架多层j2ee系统的框架,但它不强迫你必须在每一层 中必须使用Spring,因为它模块化的很好,允许你根据自己的需要选择使用它的某一个模块;它实现了很优雅的MVC,对不同的数据访问技术提供了统一的接口,采用IOC使得可以很容易的实现bean的装配,提供了简洁的AOP并据此实现Transcation Managment,等等
这篇文章主要介绍了Spring mvc实现Restful返回json格式数据实例详解的相关资料,需要的朋友可以参考下
在本示例中,我们将向您展示如何将对象转换成json格式并通过spring mvc框架返回给用户。
使用技术及环境:
PS:在spring 3 中,要输出json数据,只需要添加Jackson 库到你的classpath。
1、项目依赖
spring和jackson的依赖:
- <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.mkyong.common</groupId>
- <artifactId>SpringMVC</artifactId>
- <packaging>war</packaging>
- <version>1.0-SNAPSHOT</version>
- <name>SpringMVC Json webapp</name>
- <url>http://maven.apache.org</url>
- <properties>
- <spring.version>3.2.2.RELEASE</spring.version>
- <jackson.version>1.9.10</jackson.version>
- <jdk.version>1.6</jdk.version>
- </properties>
- <dependencies>
- <!-- Spring 3 dependencies -->
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-core</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-web</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <dependency>
- <groupId>org.springframework</groupId>
- <artifactId>spring-webmvc</artifactId>
- <version>${spring.version}</version>
- </dependency>
- <!-- Jackson JSON Mapper -->
- <dependency>
- <groupId>org.codehaus.jackson</groupId>
- <artifactId>jackson-mapper-asl</artifactId>
- <version>${jackson.version}</version>
- </dependency>
- </dependencies>
- <build>
- <finalName>SpringMVC</finalName>
- <plugins>
- <plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-eclipse-plugin</artifactId>
- <version>2.9</version>
- <configuration>
- <downloadSources>true</downloadSources>
- <downloadJavadocs>false</downloadJavadocs>
- <wtpversion>2.0</wtpversion>
- </configuration>
- </plugin>
- <plugin>
- <groupId>org.apache.maven.plugins</groupId>
- <artifactId>maven-compiler-plugin</artifactId>
- <version>2.3.2</version>
- <configuration>
- <source>${jdk.version}</source>
- <target>${jdk.version}</target>
- </configuration>
- </plugin>
- </plugins>
- </build>
- </project>
2、Model
一个简单的JavaBean,稍后将被转换成json格式输出。
- public class Shop {
- String name;
- String staffName[];
- //getter and setter methods
- }
3、Controller
添加@ResponseBody到返回值,我们看到:
Jackson 包已经在项目的 classpath
mvc:annotation-driven注解已经启用
返回方法已经添加了@ResponseBody
spring会自动处理json的转换。
- import org.springframework.stereotype.Controller;
- import org.springframework.web.bind.annotation.PathVariable;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RequestMethod;
- import org.springframework.web.bind.annotation.ResponseBody;
- import com.mkyong.common.model.Shop; [@Controller](https: //my.oschina.net/u/1774615)
- @RequestMapping("/kfc/brands") public class JSONController {@RequestMapping(value = "{name}", method = RequestMethod.GET) public@ResponseBody Shop getShopInJSON(@PathVariable String name) {
- Shop shop = new Shop();
- shop.setName(name);
- shop.setStaffName(new String[] {
- "mkyong1",
- "mkyong2"
- });
- return shop;
- }
- }
4、mvc:annotation-driven
在你的spring配置文件中启用mvc:annotation-driven注解。
- <beans xmlns="http://www.springframework.org/schema/beans"
- xmlns:context="http://www.springframework.org/schema/context"
- xmlns:mvc="http://www.springframework.org/schema/mvc"
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="
- http://www.springframework.org/schema/beans
- http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
- http://www.springframework.org/schema/context
- http://www.springframework.org/schema/context/spring-context-3.0.xsd
- http://www.springframework.org/schema/mvc
- http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
- <context:component-scan base-package="com.mkyong.common.controller" />
- <mvc:annotation-driven />
- </beans>
5、示例结果
访问URL:http://localhost:8080/SpringMVC/rest/kfc/brands/kfc-kampar
spring-mvc-json-demo
来源: http://www.phperz.com/article/17/0907/338987.html