spring – java.lang.ClassNotFoundException：com.fasterxml.jackson.core.JsonProcessingException

我正在使用templateRest将User对象发布到Rest Server但我遇到了以下错误：

Exception in thread “main” java.lang.NoClassDefFoundError:
com/fasterxml/jackson/core/JsonProcessingException at
edu.java.spring.service.client.RestClientTest.main(RestClientTest.java:33)
Caused by: java.lang.classNotFoundException:
com.fasterxml.jackson.core.JsonProcessingException at
java.net.urlclassloader.findClass(UnkNown Source) at
java.lang.classLoader.loadClass(UnkNown Source) at
sun.misc.Launcher$AppClassLoader.loadClass(UnkNown Source) at
java.lang.classLoader.loadClass(UnkNown Source) … 1 more

这是RestClientTest.java文件

public class RestClientTest {

    public static void main(String[] args) throws IOException{
        RestTemplate rt = new RestTemplate();
//      System.out.println("Rest Response" + loadUser("quypham"));
//      URL url = new URL("http://localhost:8080/rest/user/create");
        rt.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
        rt.getMessageConverters().add(new StringHttpMessageConverter());
//      Mapcreateuser(user);
        System.out.println("Rest Response" + loadUser("datpham"));
    }

这是UserRestServiceController.java文件

@Controller
public class UserRestServiceController {
    @Autowired
    public  UserDao userDao;
    @RequestMapping(value = "/rest/user/create",method = RequestMethod.POST)
    @ResponseStatus(HttpStatus.CREATED)
    public void addUser(@RequestBody User user){
        userDao.save(user);
    }

这是文件pom.xml

cope>testcope>
    spring-ormfiguration>
                    figuration>
            figuration>
                    nore.symbol.filefiguration>
            figuration>
                    xms536m
                        -XX:PermSize=128m -XX:MaxPermSize=512mstemProperties>
                        stemProperty>
                            stemProperty>
                    stemProperties>
                    contextpath>/contextpath>
                    figuration>
            

我已经浏览了谷歌上的信息,之后我试图在pom.xml中添加jackson 2.4,但似乎没有用：

jackson-databind

最佳答案

添加这个：

jackson-databind

您可以将${jackson.version}替换为您想要的任何版本,或者只需在您的pom.xml顶部添加< jackson.version> 2.x.x< /jackson.version\u0026gt; p / s：我的是版本2.7.3