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我创建了两个项目，一个用于客户端，一个用于服务器端。它似乎不起作用。我认为这可能与 POST 请求与 Web 表单的文件格式不匹配有关。我想将图片发送到网络服务器。首先，我想从我的电脑上做，将来用安卓手机做。这是我得到的代码：

客户端：

public class Send {
public static void main(String[] args) throws Exception {
    String filePath = "C:\\Users\\Mat\\Desktop\\Pic.bmp";
    String picName = "Pic.bmp";

    HttpClient httpclient = new DefaultHttpClient();

    try {
        HttpPost httppost = new HttpPost("http://localhost:8080/springmvc/upload");

        FileBody pic = new FileBody(new File(filePath));
        StringBody name = new StringBody(picName);

        MultipartEntity requestEntity = new MultipartEntity();
        requestEntity.addPart("text", name);
        requestEntity.addPart("file", pic);

        httppost.setEntity(requestEntity);

        System.out.println("executing request " + httppost.getRequestLine());
        HttpResponse response = httpclient.execute(httppost);
        HttpEntity responseEntity = response.getEntity();

        System.out.println("----------------------------------------");
        System.out.println(response.getStatusLine());
        if (responseEntity != null) {
            System.out.println("Response content length: " + responseEntity.getContentLength());
        }
        EntityUtils.consume(responseEntity);
    } finally {
        try {
            httpclient.getConnectionManager().shutdown();
        } 
        catch (Exception ignore) {
        }
    }
}
}

来自“System.out.println(response.getStatusLine());” 我得到输出“HTTP/1.1 400 Bad Request”


服务器端（网络服务器）：

控制器：

@Controller
public class HomeController {@RequestMapping(value = "/upload", method = RequestMethod.POST)
public String handleFormUpload(@RequestParam("name") String name, @RequestParam("file") MultipartFile file) throws IOException {
    if (!file.isEmpty()) {
        byte[] bytes = file.getBytes();
        FileOutputStream fos = new FileOutputStream(
                "C:\\Users\\Mat\\Desktop\\image.bmp");
        try {
            fos.write(bytes);
        } finally {
            fos.close();
        }
        return "works";
    } else {
        return "doesn't work";
    }
}

}

.jsp 文件（我想的形式）：

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page session="false" %>
<html>
<head>
    <title>Upload a file please</title>
</head>
<body>
    <h1>Please upload a file</h1>
    <form method="post" action="/form" enctype="multipart/form-data">
        <input type="text" name="name"/>
        <input type="file" name="file"/>
        <input type="submit"/>  
    </form>
</body>

豆子：

    <bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean> 

<!-- Declare explicitly, or use <context:annotation-config/> -->
<bean id="HomeController" class="net.codejava.springmvc.HomeController">

</bean>

添加了依赖项（我从 MVC 模板创建了一个项目，所以从一开始就有一堆）：

<!--  UploadImage -->
    <dependency>
        <groupId>commons-fileupload</groupId>
        <artifactId>commons-fileupload</artifactId>
        <version>1.3</version>
    </dependency>

我希望客户端发送具有特定名称的图片，而无需从客户端进行任何手动工作。

我正在使用 STS 和 Spring MVC 框架。

如果有人能看到我做错了什么，我将不胜感激！
预先感谢！

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1 回答 1

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The problem was that the form expected a: 

<input type="text" name="name"/>

When I removed that line it worked!

于 2013-05-19T10:03:57.993 回答