在Spring Controller中加载静态文件 [英] Load a static file in a Spring Controller

问题描述

我对Spring很陌生，如果我在这里看不到明显的答案，请道歉。

I'm pretty new to Spring, so apologies if I don't see the obvious answer here.

我使用Spring MVC控制器设置了一个小型演示项目，并将其部署到App Engine。在我的控制器中，我想将静态文件的内容读入String。这样做的最佳方式是什么？

I set up small demo project with a Spring MVC controller and deployed it to App Engine. In my controller I would like to read the content of a static file into a String. What's the best way of doing that?

我用谷歌搜索了一下，但我可能正在寻找错误的东西。我尝试了以下，但它不起作用：

I googled a bit but I'm probably searching for the wrong thing. I tried the below, but it does not work:

@Controller
@RequestMapping("/myController")
public class MyController {

    @RequestMapping(value = "/test", method = RequestMethod.GET)
    public @ResponseBody String myTest() {

        FileReader fileReader = null;
        BufferedReader bufferedReader = null;
        String content = "";
        try {
            fileReader = new FileReader("file:/WEB-INF/content/somecontent.txt");
            bufferedReader = new BufferedReader(fileReader);
            content = bufferedReader.readLine();
            bufferedReader.close(); 
        }
        catch (Exception ignored) { 
            // ignore
        }
        return content;
    }
}

任何向正确方向的推动都将受到高度赞赏： - ）

Any push into the right direction will be highly appreciated :-)

推荐答案

使用FileReader时，符号file：和classpath：不正确。
我建议你创建一个FileSystemResource

The notation "file:" and "classpath:" isn't right with FileReader. I suggest you to create a FileSystemResource

FileSystemResource resource = new FileSystemResource("/WEB-INF/content/somecontent.txt");

然后使用getFile（）或getInputStream（）来读取文件。
这在Web应用程序中非常有用，因为您可以使用相对路径。

and then to use getFile() or getInputStream() to read file. This is very useful in a web application, because you can use relative path.

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