Spring REST控制器文件上传-请求方法'POST‘不受支持错误
Spring REST控制器文件上传-请求方法'POST‘不受支持错误
提问于 2019-07-18 17:57:43
我正在为一个web应用程序创建一个原型，其中一个函数应该允许某人上传一个包含一些额外信息的excel文件。信息旁边的文件被存储在一个对象中，该对象被序列化并存储。
我已经创建了upload方法，在尝试测试函数时，它抛出了"Request method 'POST‘not supported“白色标签错误页面。
我怀疑这可能是pom.xml的问题，但我不能完全确定。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>project</groupId>
<artifactId>answers</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<name>MVC 1.0 Blank Project (from https://github.com/making/mvc-1.0-blank)</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.glassfish.ozark</groupId>
<artifactId>ozark</artifactId>
<version>1.0.0-m02</version>
</dependency>
<!-- Swing exercise -->
<dependency>
<groupId>com.miglayout</groupId>
<artifactId>miglayout</artifactId>
<version>3.5.5</version>
</dependency>
<!-- Web exercise -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>4.3.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-autoconfigure</artifactId>
<version>1.3.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.3.6.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
</plugins>
</build>
</project>下面是Controller类。我们将在一两天内转到Thymeleaf配置，此html目前仅用于测试目的。
@MultipartConfig
@RestController
@RequestMapping(value = "/Teacher", produces = "text/html;charset=UTF-8")
public class Teacher {
@GetMapping("")
@ResponseBody
TestController testcont;
public String homePage(@RequestParam(value = "file", required = false) String name, HttpServletRequest request,
HttpServletResponse response){
StringBuilder sb = new StringBuilder();
sb.append("<p> <a href='/Teacher/NewTest'>New Test upload</a></p>\n"
+ "<p><a href='/SelectTest'>Select Test File</a> <button type='button'>Send Test</button></p>"
+ "\n \n \n"
+ "<p><a>Current Test for students:</a>\n <a href='/getCurrentTest'></a></p>"
);
return sb.toString();
}
@GetMapping("/NewTest")
@ResponseBody
public String newTestUpload(HttpServletRequest request, HttpServletResponse response){
StringBuilder sb = new StringBuilder();
if(!request.getParameterNames().hasMoreElements()){
sb.append("<p><form action='' method='post' enctype='multipart/form-data'>"
+ "<label>Enter file</label><input type='file' name='file'>"
+ "<button type='submit'>Upload</button></p>"
+ "<p><form action='/testName'>Test Name: <input type='text' name='name' value=''></p>"
+ "<p><form action='/addInfo'>Comment: <input type='text' comment='comment' value=''></p>"
+ "<p>Answer 1: <input type='text' Answer='answer1' value=''></p>"
+ "<p>Answer 2: <input type='text' Answer='answer2' value=''></p>"
+ "</form>"
+ "<a href='/Teacher'>Back</a>\n"
);
return sb.toString();
}
else if(request.getParameter("file") != null && request.getParameter("name") != ""
&& request.getParameter("comment") != "" && request.getParameter("answer1") != null
&& request.getParameter("answer2") != null){
try{
// Upload happens here
Part filePart = request.getPart("file");
String fileName = Paths.get(filePart.getSubmittedFileName()).getFileName().toString();
InputStream fileContent = filePart.getInputStream();
File testExcel = new File(fileName);
testExcel.createNewFile();
Files.copy(fileContent, Paths.get(testExcel.getName()), StandardCopyOption.REPLACE_EXISTING);
double ans1 = Double.parseDouble(request.getParameter("answer1"));
double ans2 = Double.parseDouble(request.getParameter("answer2"));
Test test = new Test(testExcel, request.getParameter("name"),
request.getParameter("comment"), ans1, ans2);
testcont.addTest(test);
sb.append("New test uploaded!<br/>\n<a href='/'>Back</a>\n");
return sb.toString();
} catch (Exception e){
sb.append("<h1>Couldnt insert test</h1>");
response.setStatus(HttpServletResponse.SC_OK);
return sb.toString();
}
}
else{
sb.append("failed<br/>\n<a href='/'>Back</a>\n");
response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
return sb.toString();
}
}
}回答 3
Stack Overflow用户
回答已采纳
发布于 2019-07-18 18:03:34
从您发布的控制器代码中，您的两个端点都是GET。/Teacher :- @GetMapping /Teacher/新测试:- @GetMapping
您正在尝试发送到不支持POST方法的终结点，这就是为什么您会看到错误消息，指定不支持' POST‘方法。
Stack Overflow用户
发布于 2019-07-18 18:01:36
控制器中的两个方法都有@GetMapping注释，这意味着它们支持GET请求。您需要用@PostMapping替换一个(以支持POST请求)
Stack Overflow用户
发布于 2019-07-18 18:05:09
将您的方法更正为：
@PostMapping
@RequestMapping("/NewTest")
public String newTestUpload(HttpServletRequest request, HttpServletResponse response) {或
@PostMapping(path = "/NewTest")
public String newTestUpload(HttpServletRequest request, HttpServletResponse response) {页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/57091865
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