Spring 引导 终端中的 POST 请求不支持的 Spring 引导内容类型'text/plain'

Question

我在春季启动中有一个应用程序。我创建了一个 post 请求来接受字符串并在文本文件中吐出 JSON。我正在使用@RequestBody作为地图。我不确定我是否正确使用它，这就是我收到错误的原因？

当我尝试做

curl -d "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|0.0"
 -H 'Content-Type: text/plain' 'http://localhost:9119/prediction'

它给了我这个错误

status":415,"error":"Unsupported Media Type","message":"Content type 'text/plain' not supported","path":"/prediction"

这是我的控制器类

import java.io.IOException;
import java.util.HashMap;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@Validated
@RestController
public class MockController {
    @Autowired
    MockEndPoint mockendpoint;
    @Autowired
    MockConfig mockconfig;
    String w;
    String x;
    String y;
    String z;
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index() {
        return "hello!";
    }
    @RequestMapping(value = "/prediction", method = RequestMethod.POST, produces = {"application/json"},consumes= "text/html")
    public ResponseEntity<String> payloader1(@RequestBody HashMap<String,String> params ) throws IOException{
        params = mockconfig.getHashmap();
        if(params.containsKey(mockconfig.input1))
            w  = mockconfig.input1;
            String[] a = w.split("\|");
            if (a.length == 18) 
        {
                return ResponseEntity.ok(params.get(mockconfig.input1)); 
        }
        else {
            return ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Inccorect payload amount(18 parameters required");
        }

    }

}

这是我的端点类

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.ResourceUtils;
@Configuration
public class MockEndPoint {


    @Bean
    public String Payload1() throws IOException {
        File file = ResourceUtils.getFile("src/test/resources/Payload1.txt");
        String content = new String(Files.readAllBytes(file.toPath()));
        return content;
    }

    @Bean
    public String Payload2() throws IOException {
        File file = ResourceUtils.getFile("src/test/resources/Payload2.txt");
        String content = new String(Files.readAllBytes(file.toPath()));
        return content;
    }
    @Bean
    public String Payload3() throws IOException {
        File file = ResourceUtils.getFile("src/test/resources/Payload3.txt");
        String content = new String(Files.readAllBytes(file.toPath()));
        return content;
    }
    @Bean
    public String Payload4() throws IOException {
        File file = ResourceUtils.getFile("src/test/resources/Payload4.txt");
        String content = new String(Files.readAllBytes(file.toPath()));
        return content;
    }

    }

这是我的配置类

import java.io.IOException;
import java.util.HashMap;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
@Configuration
public class MockConfig {
    @Autowired
    MockEndPoint mockendpoint;
    String input1 = "ncs|56-2629193|1972-03-28|20190218|77067|6208|3209440|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|0.0";
    String input2 = "ncp|56-2629193|1955-11-28|20181213|73630|6404|182232|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|33.35";
    String input3 = "ncp|56-2629193|1955-11-28|20190103|73630|6404|182232|self|-123|-123|-123|0.0|0.0|0.0|0.0|0.0|0.0|33.35";
    String input4 = "ncp|56-2629193|1955-11-28|20190213|73700|6404|182232|self|-123|-123|-123|0.0|20.0|325.0|0.0|0.0|269.28|269.28";



    public HashMap<String,String> getHashmap() throws IOException {
        HashMap<String,String> hm = new HashMap<String,String>();
        hm.put(input1,mockendpoint.Payload1());
        hm.put(input2,mockendpoint.Payload2());
        hm.put(input3,mockendpoint.Payload3());
        hm.put(input4,mockendpoint.Payload4());
        return hm;
    }
}

Answer 1

请修改几件事：

• 如果您希望请求正文中有Map，则需要consumes内容类型，而不是text/plain，如 application/json 。任何转换器都不会将text/plain内容转换为Map。否则，将请求正文作为String，并在内部将其转换为代码中的Map。
• 在 curl 请求中添加-X POST .此外，使有效负载结构成为 JSON 键值对。

由于有效负载中的文本内容和预期的请求Map数据类型，您会收到 405 错误代码。若要确认这一点，只需删除请求正文Map，然后查看 API 是否命中。然后按照上述步骤操作。

Answer 2

您在请求中提供-H 'Content-Type: text/plain'并在控制器中写入consumes= "text/html"。要么使这两者相同。之后，您还应该将数据类型HashMap<String,String> params更改为字符串。当您将这些数据作为text/plain传递时