java : Convert formatted xml file to one line string

Question

我有一个格式化的 XML 文件，我想将它转换为一个行字符串，我该怎么做。

示例 xml:

<?xml version="1.0" encoding="UTF-8"?>
<books>
   <book>
       <title>Basic XML</title>
       <price>100</price>
       <qty>5</qty>
   </book>
   <book>
     <title>Basic Java</title>
     <price>200</price>
     <qty>15</qty>
   </book>
</books>

预期输出

<?xml version="1.0" encoding="UTF-8"?><books><book> <title>Basic XML</title><price>100</price><qty>5</qty></book><book><title>Basic Java</title><price>200</price><qty>15</qty></book></books>

提前致谢。

Answer 1

//filename is filepath string
BufferedReader br = new BufferedReader(new FileReader(new File(filename)));
String line;
StringBuilder sb = new StringBuilder();

while((line=br.readLine())!= null){
    sb.append(line.trim());
}

使用 StringBuilder 比 concat http://kaioa.com/node/59 更有效