錯誤：org.springframework.web.HttpMediaTypeNotSupportedException：不支持內容類型'text/plain;charset=UTF-8'

Question

我是 Spring Data 的新手。 我不斷收到錯誤消息： org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'text/plain;charset=UTF-8' not supported我試圖將@RequestMapping注釋中的消耗更改為text/plain但不幸的是它沒有幫助。*

有任何想法嗎？

謝謝，

我的代碼如下所示：

package com.budget.processing.application;


import com.budget.business.service.Budget;
import com.budget.business.service.BudgetItem;
import com.budget.business.service.BudgetService;
import com.budget.processing.dto.BudgetDTO;
import com.budget.processing.dto.BudgetPerConsumerDTO;
import com.utils.Constants;
import com.common.utils.config.exception.GeneralException;
import org.apache.log4j.Logger;
import org.joda.time.YearMonth;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.*;

import javax.ws.rs.core.MediaType;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;


@Controller("budgetManager")
@RequestMapping(value = "budget", produces  = Constants.RESPONSE_APP_JSON)
@Transactional(propagation = Propagation.REQUIRED)
public class BudgetManager {

private static final Logger logger = Logger.getLogger(BudgetManager.class);


@Autowired
private BudgetService budgetService;


@RequestMapping(method = RequestMethod.GET)
public
@ResponseBody
Collection<BudgetDTO> getBudgetMonthlyAllConsumers() throws GeneralException {

    List<Budget> budgetList = budgetService.getBudgetForAllConsumers();
    List<BudgetDTO> bugetDtos = new ArrayList<>();
    for (Budget budget : budgetList) {
        BudgetDTO budgetDTO = generateBudgetDto(budget);
        bugetDtos.add(budgetDTO);
    }
    return bugetDtos;
}


@RequestMapping(method = RequestMethod.PUT, consumes = MediaType.APPLICATION_JSON)
public
@ResponseBody
Collection<BudgetDTO> updateConsumerBudget(@RequestParam(value = "budgetPerDate", required = false)

                          ArrayList<BudgetPerConsumerDTO> budgetPerDate) throws GeneralException, ParseException {

    List<BudgetItem> budgetItemList = new ArrayList<>();
    List<Budget> budgets = new ArrayList<>();
    if (budgetPerDate != null) {
        for (BudgetPerConsumerDTO budgetPerConsumerDTO : budgetPerDate) {
            budgetItemList.add(budgetService.createBudgetItemForConsumer(budgetPerConsumerDTO.getId(), new YearMonth(budgetPerConsumerDTO.getDate()), budgetPerConsumerDTO.getBudget()));
        }
    }

    budgets = budgetService.getBudgetForAllConsumers();
    List<BudgetDTO> budgetDTOList = new ArrayList<>();
    for (Budget budget : budgets) {
        BudgetDTO budgetDto = generateBudgetDto(budget);
        budgetDTOList.add(budgetDto);
    }
    return budgetDTOList;

}

}

這是我得到的例外：

ERROR 2014-07-26 18:05:10.737 (GlobalExceptionHandler.eITFMSException: 86) Error executing Web Service org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'text/plain;charset=UTF-8' not supported
at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.handleNoMatch(RequestMappingInfoHandlerMapping.java:215)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:289)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:229)
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.getHandlerInternal(AbstractHandlerMethodMapping.java:56)
at org.springframework.web.servlet.handler.AbstractHandlerMapping.getHandler(AbstractHandlerMapping.java:298)
at org.springframework.web.servlet.DispatcherServlet.getHandler(DispatcherServlet.java:1091)

該請求如下所示：我正在使用 Simple Rest Template Google Extension。 請求如下所示：

localhost:8080/rest
1 requests ❘ 140 B transferred
HeadersPreviewResponseCookiesTiming
Remote Address:localhost:8080
Request URL: localhost:8080/rest/budget
Request Method:PUT
Status Code:500 Internal Server Error
Request Headersview source
Accept:*/*
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8,he;q=0.6
Connection:keep-alive
Content-Length:331
Content-Type:text/plain;charset=UTF-8
Cookie:JSESSIONID=AE87EEB7A73B9F9E81956231C1735814
Host:10.23.204.204:8080
Origin:chrome-extension://fhjcajmcbmldlhcimfajhfbgofnpcjmb
User-Agent:Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/35.0.1916.153 Safari/537.36
Request Payloadview parsed
{
"budgetPerDate":
[

         {
            "id":942,
            "date":[
               2014,
               1,
               1
            ],
    "budget": 100
         },
         {
            "id":942,
            "date":[
               2014,
               2,
               1
            ],
    "budget": 150
         }
 ]
}

Answer 1

基於評論中提到的內容，最簡單的解決方案是：

@RequestMapping(method = RequestMethod.PUT, consumes = MediaType.APPLICATION_JSON_VALUE)
@ResponseBody
public Collection<BudgetDTO> updateConsumerBudget(@RequestBody SomeDto someDto) throws GeneralException, ParseException {

    //whatever

}

class SomeDto {

   private List<WhateverBudgerPerDateDTO> budgetPerDate;


  //getters setters
}

該解決方案假定您正在創建的 HTTP 請求實際上具有

Content-Type:application/json而不是text/plain

Answer 2

對我來說，結果證明我在一個實體中有一個@JsonManagedReferece ，而在另一個引用的實體中沒有@JsonBackReference 。 這導致編組器拋出錯誤。

Answer 3

如果您是通過Postman發出郵寄請求，請確保您選擇了這 2 個選項

1.應該選擇JSON

2. 內容類型- 應用程序/json

Answer 4

好的 - 對我來說問題的根源在於序列化/反序列化。 正在發送和接收的對象如下，其中提交代碼並返回代碼和 maskedPhoneNumber。

@ApiObject(description = "What the object is for.")
@JsonIgnoreProperties(ignoreUnknown = true)
public class CodeVerification {

    @ApiObjectField(description = "The code which is to be verified.")
    @NotBlank(message = "mandatory")
    private final String code;

    @ApiObjectField(description = "The masked mobile phone number to which the code was verfied against.")
    private final String maskedMobileNumber;

    public codeVerification(@JsonProperty("code") String code, String maskedMobileNumber) {
        this.code = code;
        this.maskedMobileNumber = maskedMobileNumber;
    }

    public String getcode() {
        return code;
    }

    public String getMaskedMobileNumber() {
        return maskedMobileNumber;
    }
}

問題是我沒有在構造函數中為 maskedMobileNumber 定義 JsonProperty。 即構造函數應該是

public codeVerification(@JsonProperty("code") String code, @JsonProperty("maskedMobileNumber") String maskedMobileNumber) {
    this.code = code;
    this.maskedMobileNumber = maskedMobileNumber;
}

Answer 5

我通過刪除@JsonManagedReference並保留@JsonBackReference來解決它以避免無限循環。