java - 使用 java 读取 "ParseFile"

Question

我已经从“parse.com”中检索到一个“ParseFile”。但是，我无法找到读取该“ParseFile”的正确方法。我尝试使用 Java 的“BufferReader”读取 parseFile 只是为了结束白费了。

下面是我的代码

 final ParseQuery<ParseObject> query = ParseQuery.getQuery("TestObject");
    query.getInBackground("xxxxxxxxx", new GetCallback<ParseObject>() {
        public void done(ParseObject object, ParseException e) {
            if (e == null) {
                try {
                    ParseFile parseFile=object.getParseFile("file");
                    BufferedReader br = new BufferedReader(new FileReader(String.valueOf(parseFile)));
                    StringBuilder sb = new StringBuilder();
                    String line = br.readLine();
                    while (line != null) {
                        sb.append(line);
                        sb.append("\n");
                        line = br.readLine();

                    }
                    System.out.println("exact values"+sb.toString());
                    br.close(); }
                catch (Exception e1) {
                    e1.printStackTrace();
                }


            } else {
                System.out.println("bye!!");
            }
        }
    });

下面是我的 StackTrace:

10-14 00:10:33.178  18300-18300/? W/System.err﹕       
java.io.FileNotFoundException:  
com.parse.ParseFile@328cdd84: open failed: ENOENT (No such file or  
directory)
10-14 00:10:33.178  18300-18300/? W/System.err﹕ at 
libcore.io.IoBridge.open(IoBridge.java:409)
10-14 00:10:33.178  18300-18300/? W/System.err﹕ at java.io.FileInputStream. 
<init>(FileInputStream.java:78)
10-14 00:10:33.178  18300-18300/? W/System.err﹕ at java.io.FileInputStream.  
<init>(FileInputStream.java:105)
10-14 00:10:33.178  18300-18300/? W/System.err﹕ at java.io.FileReader.<init>  
(FileReader.java:66)

FilenotFound Exception 指向的行:

    BufferedReader br = new BufferedReader(new FileReader(String.valueOf(parseFile)));

任何建议都会非常有帮助。谢谢!

Answer 1

您正在将对象 parseFile 的字符串而不是文件传递给 FileReader。

换行

    BufferedReader br = new BufferedReader(new FileReader(String.valueOf(parseFile)));

到

BufferedReader br = new BufferedReader(new FileReader(parseFile.getFile()));