java - 使用 `IOUtils.toString(containerRequestContext.getEntityStream(),"UTF-8"); 时无法解码特殊字符 `
问题描述
我使用 IOUtils.toString(containerRequestContext.getEntityStream(),"UTF-8"); 获取实体流并使用 IOUtils 将其转换为字符串。但是,当遇到一些特殊字符如“{”、“[”等时,IOUtils 无法解码,只能解码英文、数字和“&”。
IOUtls解码的实体内容如下
S=9&X=5&R=5&command=%5B%7B++++++++++%22zoneCode%22%3A+%22R98542%22%2C+++++++++++%22targetPosX%22%3A+4122.54%2C+++++++++++%22targetPosY%22%3A+9547.76%2C+++++++++++%22targetPosZ%22%3A+12548.69%2C+++++++++++%22power%22%3A+521456%2C+++++++++++%22duration%22%3A+6412+++++++%7D%2C+++++++%7B+++++++++++%22zoneCode%22%3A+%22R652485%22%2C+++++++++++%22targetPosX%22%3A+95482.36%2C+++++++++++%22targetPosY%22%3A+7845.85%2C+++++++++++%22targetPosZ%22%3A+9847.37%2C+++++++++++%22power%22%3A+741785%2C+++++++++++%22duration%22%3A+6482+++++++%7D%2C++++++%7B+++++++++++%22zoneCode%22%3A+%22R742545%22%2C+++++++++++%22targetPosX%22%3A+16982.93%2C+++++++++++%22targetPosY%22%3A+85623.17%2C+++++++++++%22targetPosZ%22%3A+4872.27%2C+++++++++++%22power%22%3A+34528%2C+++++++++++%22duration%22%3A+342+++++++%7D++%5D+
原始表单数据如下: |field|value| |-|-| |S|9| |X|5| |R|5| |命令|(json 数组的文本)|
“命令”的值如下所示:
[
{
"zoneCode": "R98542",
"targetPosX": 4122.54,
"targetPosY": 9547.76,
"targetPosZ": 12548.69,
"power": 521456,
"duration": 6412
},
{
"zoneCode": "R652485",
"targetPosX": 95482.36,
"targetPosY": 7845.85,
"targetPosZ": 9847.37,
"power": 741785,
"duration": 6482
},
{
"zoneCode": "R742545",
"targetPosX": 16982.93,
"targetPosY": 85623.17,
"targetPosZ": 4872.27,
"power": 34528,
"duration": 342
}
]
解决方案
您还应该进行 URL 解码。导入java.net.URLDecoder
包并使用
URLDecoder.decode(string, encoding)
方法。
请参阅下面的示例(byteToString 变量是您问题中的文本):
public static void main(String[] args) throws FileNotFoundException, UnsupportedEncodingException {
String byteToString = "S=9&X=5&R=5&command=%5B%7B++++++++++%22zoneCode%22%3A+%22R98542%22%2C+++++++++++%22targetPosX%22%3A+4122.54%2C+++++++++++%22targetPosY%22%3A+9547.76%2C+++++++++++%22targetPosZ%22%3A+12548.69%2C+++++++++++%22power%22%3A+521456%2C+++++++++++%22duration%22%3A+6412+++++++%7D%2C+++++++%7B+++++++++++%22zoneCode%22%3A+%22R652485%22%2C+++++++++++%22targetPosX%22%3A+95482.36%2C+++++++++++%22targetPosY%22%3A+7845.85%2C+++++++++++%22targetPosZ%22%3A+9847.37%2C+++++++++++%22power%22%3A+741785%2C+++++++++++%22duration%22%3A+6482+++++++%7D%2C++++++%7B+++++++++++%22zoneCode%22%3A+%22R742545%22%2C+++++++++++%22targetPosX%22%3A+16982.93%2C+++++++++++%22targetPosY%22%3A+85623.17%2C+++++++++++%22targetPosZ%22%3A+4872.27%2C+++++++++++%22power%22%3A+34528%2C+++++++++++%22duration%22%3A+342+++++++%7D++%5D+";
String urlDecoded = URLDecoder.decode(byteToString , StandardCharsets.UTF_8.toString());
System.out.println(urlDecoded);
}
结果:
S=9&X=5&R=5&command=[{ "zoneCode": "R98542", "targetPosX": 4122.54, "targetPosY": 9547.76, "targetPosZ": 12548.69, "power": 521456, "duration": 6412 }, { "zoneCode": "R652485", "targetPosX": 95482.36, "targetPosY": 7845.85, "targetPosZ": 9847.37, "power": 741785, "duration": 6482 }, { "zoneCode": "R742545", "targetPosX": 16982.93, "targetPosY": 85623.17, "targetPosZ": 4872.27, "power": 34528, "duration": 342 } ]
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