Question

当我想测试REST应用程序时，我尝试编写如下所示的测试代码段：

控制器代码：

import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.*;

@RestController
@RequestMapping(value="/Test")
public class test {

    @RequestMapping(value="test1/{modelId}",method = RequestMethod.POST)
    public void test1(@PathVariable(value="modelId") String modelId,     @RequestBody MultiValueMap<String, String> values){
        String name = values.getFirst("name");
        String description = values.getFirst("description");
        System.out.println(modelId);
        System.out.println(name);
        System.out.println(description);
    }

    @RequestMapping(value="test2",consumes="application/x-www-form-urlencoded",method = RequestMethod.PUT)
    public void test2( @RequestBody MultiValueMap<String, String> values){
        String name = values.getFirst("name");
        String description = values.getFirst("description");
          System.out.println(name);
          System.out.println(description);
    }
}

以下是Ajax调用函数：

function start() {
    var data1 = "test";
    var data2 = "test model";

    var jdata = {name:data1,description:data2};
    $.ajax({
        type: "PUT",
        async: false,
        url: "/Test/test2",
        dataType: "json",
        contentType: "application/x-www-form-urlencoded;charset=UTF-8",
        data: jdata,
        success: function (data) {
            alert("ok");
        }
    });
}

当我致电http://localhost:8080/Test/test1/123时，我可以得到正确的结果。但是当我尝试拨打http://localhost:8080/Test/test2时，控制台会显示警告：

WARN  o.s.w.s.m.support.DefaultHandlerExceptionResolver - Failed to read HTTP message:
org.springframework.http.converter.HttpMessageNotReadableException:
Required request body is missing:
public void com.wisto.util.test.test2(org.springframework.util.MultiValueMap<java.lang.String, java.lang.String>)

并且浏览器出现400错误。

我想我一定会想念SpringBoot的配置。我该如何解决？

为了更清楚，我从Activiti中提出了一个真正的代码包org.activiti.rest.editor.model;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;

import org.activiti.editor.constants.ModelDataJsonConstants;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Model;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.PathVariable;
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.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;

/**
 * @author Tijs Rademakers
*/
@RestController
public class ModelSaveRestResource implements ModelDataJsonConstants {

  protected static final Logger LOGGER =    LoggerFactory.getLogger(ModelSaveRestResource.class);

  @Autowired
  private RepositoryService repositoryService;

  @Autowired
  private ObjectMapper objectMapper;

  @RequestMapping(value="/model/{modelId}/save", method = RequestMethod.PUT)
  @ResponseStatus(value = HttpStatus.OK)
  public void saveModel(@PathVariable String modelId, @RequestBody MultiValueMap<String, String> values) {
    try {

      Model model = repositoryService.getModel(modelId);

      ObjectNode modelJson = (ObjectNode)   objectMapper.readTree(model.getMetaInfo());

      modelJson.put(MODEL_NAME, values.getFirst("name"));
      modelJson.put(MODEL_DESCRIPTION, values.getFirst("description"));
      model.setMetaInfo(modelJson.toString());
      model.setName(values.getFirst("name"));

      repositoryService.saveModel(model);

      repositoryService.addModelEditorSource(model.getId(), values.getFirst("json_xml").getBytes("utf-8"));

      InputStream svgStream = new ByteArrayInputStream(values.getFirst("svg_xml").getBytes("utf-8"));
      TranscoderInput input = new TranscoderInput(svgStream);

      PNGTranscoder transcoder = new PNGTranscoder();
      // Setup output
      ByteArrayOutputStream outStream = new ByteArrayOutputStream();
      TranscoderOutput output = new TranscoderOutput(outStream);

      // Do the transformation
      transcoder.transcode(input, output);
      final byte[] result = outStream.toByteArray();
      repositoryService.addModelEditorSourceExtra(model.getId(), result);
      outStream.close();

    } catch (Exception e) {
      LOGGER.error("Error saving model", e);
      throw new ActivitiException("Error saving model", e);
    }
  }
}

上面的代码适用于Spring.But和SpringBoot.So我很困惑！

Answer 1

我不认为您的数据对象会转换为字符串作为有效负载。尝试： data:JSON.stringify(jdata)

内容类型也应该是：

contentType: "application/json; charset=utf-8"

Answer 2

更改ajax中的dataType参数。您的代码指定数据类型为 JSON ，但控制器为application/x-www-form-urlencoded

您可以将其设为dataType: 'text'

或者，如果您对请求使用JSON，请更改以下

consumes=MediaType.APPLICATION_JSON_VALUE

在ajax参数contentType: "application/json"

SpringBoot 1.5.2：当我进行PUT RequestMethod

2 个答案: