java - 在Spring MVC 4中将POJO作为JSON返回

我有一个非常简单的对象，我想以JSON返回

public class Event {

    private String store;
    private Date date;
    private double fee;
    private String kit;
    private String information;

和测试控制器如下

@RestController
@EnableWebMvc
public class UserController {

    @RequestMapping(value = "/user/{username}", method = RequestMethod.GET, produces = "application/json", headers="Accept=*/*")
    @ResponseBody
    public Event getUser(@PathVariable("username") String username){

        Event event = new Event("dummy", new Date(), 4.0, "dummy", "dummy");
        return event;
    }

}

我得到“此请求标识的资源只能根据请求“接受”标头生成特性不可接受的响应。”

我的servlet只有此条目

<mvc:annotation-driven />

如何获得所需的输出？

最佳答案

添加

dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-annotations</artifactId>
        <version>2.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-core</artifactId>
        <version>2.7.0</version>
    </dependency>
    <dependency>
        <groupId>com.fasterxml.jackson.core</groupId>
        <artifactId>jackson-databind</artifactId>
        <version>2.7.0</version>
    </dependency>