BufferedReader 读取body

回答: 使用BufferedReader读取body的代码示例如下：

BufferedReader bufferedReader = new BufferedReader(new FileReader("file.txt"));
StringBuilder stringBuilder = new StringBuilder();
String line;
while ((line = bufferedReader.readLine()) != null) {
    stringBuilder.append(line);
}
String body = stringBuilder.toString();

这段代码首先创建了一个BufferedReader对象，用于读取文件中的数据。然后使用一个StringBuilder对象来存储读取到的数据。在while循环中，通过调用bufferedReader.readLine()方法逐行读取文件内容，并将每行数据追加到stringBuilder中。最后，通过调用stringBuilder.toString()方法将所有读取到的数据转换为一个字符串，即为body。
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