Question

I have made a folder outside the webcontent to save the uploaded images by user. Initially i tried to access those files directly passing the location in the "src" tag but unable to fetch it. After researching i found that i have to set the path using in "conf/server.xml" file inside the tag. Although i have made all these changes i am unable to access the file.

1)My Tomcat is Installed at E:\my work\Tomcat

2)I am having my webroot at E:\my work\Project

3)Image folder is at E:\my work\images

Path i am setting in "conf\server.xml" is

    <Host name="localhost"  appBase="webapps"
        unpackWARs="true" autoDeploy="true"
        xmlValidation="false" xmlNamespaceAware="false">
   <Context docBase="/my work/images/" path="/images"  />
   </Host>

But still when i tried to access the file using the following url

           http://localhost:8080/images/paper.jpg

I am unable to fetch it and getting the "HTTP Status 404" and request resource not found error.

Please help me in this i am using the Blob feild to store the image and storing the image inside this folder when user request for a particuler image. I don't want to use specific servlet to write the image into the browser rather i want direct access to the user.

Please help me to solve this problem. Thanks Regard

Answer 1

将<context>添加到tomcat/conf/server.xml文件。

<Context docBase="c:\images" path="/project/images" />

通过这种方式，您应该能够在以下位置找到文件（例如c：/images/NameOfImage.jpg）：

http://localhost:8080/project/images/NameOfImage.jpg

Answer 2

解决方法是编写一个Servlet，它将从外部文件夹中读取文件并将它们传输到客户端：基本上它就是客户端和外部文件系统之间的代理。这可能是类似下面的内容，你可以简单地使用：

<img src="/pathToMyImageServlet?imageId=123"/>

的Servlet

public class ImageServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        String imageId = request.getParameter("imageId");

        /*
        File file = new File("E:/my work/images/" + imageId);
        FileInputStream in = new FileInputStream(file);
        OutputStream out = response.getOutputStream();

        byte[] buf = new byte[1024];
        int count = 0;

        while ((count = in.read(buf)) >= 0) {
            out.write(buf, 0, count);
        }
        */

        byte[] imageData = ....// data from db for specified imageId
        OutputStream out = response.getOutputStream();
        out.write(imageData);
        out.flush();
        out.close();
        //in.close();

    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        doGet(request, response);
    }
}

Answer 3

根据我的理解，你的项目应该在tomcat webapps文件夹中。图像应该像

webapps/YourProject/resources/images/something.jpg

或

webapps/YourProject/WEB-Content/images/something.jpg

根据我的经验，我认为你不必在任何xml中设置路径。只需直接访问您将能够访问它的图像。容器限制访问放在WEB-INF文件夹中的任何内容。

Access files outside the Webcontent folder

3 个答案: