Java RESTful文件上传问题

Question

I am learning now REST and Spring and I have to do some starting project, to get used with the technologies.我现在正在学习 REST 和 Spring 并且我必须做一些启动项目，才能使用这些技术。 So, I made a RESTful application after some tutorials and I have some problems with uploading files to the service.因此，我在学习了一些教程后制作了一个 RESTful 应用程序，但在将文件上传到服务时遇到了一些问题。

When I hit the Run On Server option in eclipse in the context menu of FileUpload.html, it gives me a HTTP Status 404 - Not Found.当我在 FileUpload.html 的上下文菜单中点击 eclipse 中的 Run On Server 选项时，它给了我一个 HTTP 状态 404 - 未找到。 I run the html file and it can't find it.我运行 html 文件，但找不到它。 I don't understand why.我不明白为什么。 I have to say that other actions, like @GET are working properly.我不得不说其他操作，如@GET 工作正常。 So when I access from the browser some address for a GET method, it works.因此，当我从浏览器访问某个 GET 方法的地址时，它可以工作。 So if some of you know something, please let me know because I really don't get it.所以如果你们中的一些人知道什么，请告诉我，因为我真的不明白。 Thanks谢谢

Here is the GalleryResource class:这是 GalleryResource class：

@Path("/locations")
public class GalleryResource {
    private GalleryService galleryService = new PicturesGalleryService();

    @POST
    @Path("/upload")
    @Consumes("multipart/form-data")
    public Response uploadFile(
            @FormDataParam("file") InputStream uploadedInputStream,
            @FormDataParam("file") FormDataContentDisposition fileDetail) {

        String newFile= "c:/gallery/"
                + fileDetail.getFileName();

        FileUtiles.createNewPicture(newFile);

        String output = "File uploaded to : " + uploadedFileLocation;

        return Response.status(200).entity(output).build();

    }
}

Here is the sample web page:这是示例 web 页面：

<html>
<body> 
    <form action="http://localhost:8080/locations/upload" method="post" enctype="multipart/form-data">

      <input type="file" name="file"/> 
      <input type="submit" value="Upload File" />
    </form> 
</body>
</html>

Here is the directory tree of my project:这是我的项目的目录树：

在此处输入图像描述

The web.xml file: web.xml 文件：

<web-app id="WebApp_ID" version="2.4"
    xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <display-name>Restful Web Application</display-name>

    <servlet>
        <servlet-name>jersey-serlvet</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>com.sun.jersey.config.property.packages</param-name>
            <param-value>com.rest.sample.resources</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>jersey-serlvet</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>

</web-app>

The.project file: .project 文件：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" output="build/classes" path="src/main/java"/>
    <classpathentry kind="src" output="build/resource" path="src/main/resources"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v7.0">
        <attributes>
            <attribute name="owner.project.facets" value="jst.web"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
    <classpathentry kind="output" path="build/classes"/>
</classpath>

The.classpath file: .classpath 文件：

<?xml version="1.0" encoding="UTF-8"?>
<classpath>
    <classpathentry kind="src" output="build/classes" path="src/main/java"/>
    <classpathentry kind="src" output="build/resource" path="src/main/resources"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.web.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.j2ee.internal.module.container"/>
    <classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/Apache Tomcat v7.0">
        <attributes>
            <attribute name="owner.project.facets" value="jst.web"/>
        </attributes>
    </classpathentry>
    <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
    <classpathentry kind="output" path="build/classes"/>
</classpath>

Answer 1

Do you get a log entry saying that it loaded GalleryResource?您是否收到一个日志条目说它加载了 GalleryResource？ Also, if you change your @Path("/locations") to something unique from the classes that use @GET does it work?此外，如果您将 @Path("/locations") 更改为使用 @GET 的类中唯一的东西，它会起作用吗？ So change it to @Path("/locationsUpload").所以把它改成@Path("/locationsUpload")。 I've had issues before with multiple files using the same path entry.我之前遇到过使用相同路径条目的多个文件的问题。

Answer 2

Are you sure this:你确定这个：

http://localhost:8080/locations/upload http://localhost:8080/locations/upload

is correct?是正确的？

And should not include the name of the your project before the resource path, like:并且不应在资源路径之前包含项目的名称，例如：

http://localhost:8080/RESTservice/locations/upload http://localhost:8080/RESTservice/locations/upload

? ?

Answer 3

Is it a spring web application?它是 spring web 应用程序吗？

I am missing:我失踪了：

the spring web configuration file (in most cases a seperate file but sometimes included in applicationContext.xml) spring web 配置文件（在大多数情况下是一个单独的文件，但有时包含在 applicationContext.xml 中）
The part of the web.xml where spring is configured and started web.xml的部分spring配置并启动

Did you really tryed to start the server from the HTML file?您是否真的尝试从 HTML 文件启动服务器？ -- I never have seen this option before. -- 我以前从未见过这个选项。 -- I always add the application to the Server and start the Server from the "Server" view (Eclipse Alt-3 + "Server") -- 我总是将应用程序添加到服务器并从“服务器”视图启动服务器（Eclipse Alt-3 +“服务器”）

Java RESTful文件上传问题

问题描述

3 个解决方案

解决方案1
0 2011-07-19 17:03:50

解决方案2
0 2011-07-19 18:40:34

解决方案3
0 2011-07-20 06:24:13

Java RESTful文件上传问题

问题描述

3 个解决方案

解决方案1 0 2011-07-19 17:03:50

解决方案2 0 2011-07-19 18:40:34

解决方案3 0 2011-07-20 06:24:13

解决方案1
0 2011-07-19 17:03:50

解决方案2
0 2011-07-19 18:40:34

解决方案3
0 2011-07-20 06:24:13