Question

我试图在我的应用中实现一些帖子功能。

我有以下帖子方法：

restrictLoginAttemptsFromSingleIp: function (id, userId) {
  var serviceUri = baseServicesUrlService.getBaseServicesUrl() + "/employee-service/restrict-single-ip";
  return $http.post(serviceUri, {restrictLoginAttemptIp: {loginAttemptIds: [id]}, dataOwnerId: userId});
}

我的服务器端正在使用RESTEasy 3.0.4和Hibernate验证：

@POST
@Path("/restrict-single-ip")
public Response RestrictSingleIp(@Valid RestrictLoginAttemptIpRequest requestData, @Context HttpRequest request){
        return Response.status(200).build();
}

RestrictLoginAttemptIpRequest类从dataOwnerId继承了Long类型的一个字段（PostBase）：

public class RestrictLoginAttemptIpRequest extends PostBase {
    private RestrictLoginAttemptIp restrictLoginAttemptIp;

    public RestrictLoginAttemptIp getRestrictLoginAttemptIp() {
        return restrictLoginAttemptIp;
    }

    public void setRestrictLoginAttemptIp(RestrictLoginAttemptIp restrictLoginAttemptIp) {
        this.restrictLoginAttemptIp = restrictLoginAttemptIp;
    }
}

RestrictLoginAttemptIp类：

package blah;

import org.hibernate.validator.constraints.NotEmpty;

import java.util.List;

public class RestrictLoginAttemptIp {
    @NotEmpty(message = "blah")
    private List<Long> loginAttemptIds;

    public List<Long> getLoginAttemptIds() {
        return loginAttemptIds;
    }

    public void setLoginAttemptIds(List<Long> loginAttemptIds) {
        this.loginAttemptIds = loginAttemptIds;
    }
}

我从POST请求中获得以下数据字符串似乎没问题：

{restrictLoginAttemptIp={loginAttemptIds=[328]}, dataOwnerId=8}

有人可以解释一下，当我调用该函数时，为什么会出现400 Bad request错误？

这是因为Long数据类型吗？我应该以某种方式在Javascript中将它们标记为Longs？

Answer 1

4小时后我确定了问题。

案例是，我正在安全拦截器中读取POST数据（解决权限问题）。在RESTEasy中读取POST数据有点棘手。要创建LinkedHashMap我使用Apache IOUtils（https://commons.apache.org/proper/commons-io/javadocs/api-release/org/apache/commons/io/IOUtils.html），就像在下一个代码段中找到的那样

String result = IOUtils.toString(requestContext.getEntityStream());
ObjectMapper mapper = new ObjectMapper();
Object obj = mapper.readValue(result, Object.class);

我查看了我的AngularJS拦截器（例如用于在每个请求的标头中添加内容）并且发现服务器无法读取输入流：java.io.ioexception no content to map to object due to end of input。

最后问题是，在我读完EntityStream的{{1}}后，它变空了。解决方案是在读取POST数据后重新填充它。像这样：

ContainerRequestContext

P上。 S. private LinkedHashMap getPostData(ContainerRequestContext requestContext) { Object obj = null; try { String result = IOUtils.toString(requestContext.getEntityStream()); ObjectMapper mapper = new ObjectMapper(); obj = mapper.readValue(result, Object.class); //IMPORTANT: After you can get the entity stream only once. After reading the entity stream is empty //so the JSON parser cannot convert EMPTY entity stream into any object. To avoid strange errors (like 400 Bad Request) //you have to convert the string back to input stream and rewrite the empty entity stream. InputStream stream = IOUtils.toInputStream(result); requestContext.setEntityStream(stream); System.out.println(obj); } catch (IOException e) { e.printStackTrace(); } return (LinkedHashMap) obj; }来自杰克逊

AngularJS 400错误请求

1 个答案: