Question

java,nickname=new String(nickname.getBytes("iso-8859-1"),"utf-8"); 为何这样操作呢？

java中：..............................
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("param", "post"));
params.add(new BasicNameValuePair("nickname", nickname.getText()
.toString()));
params.add(new BasicNameValuePair("content", content.getText()
.toString()));
try {
httpRequest.setEntity(new UrlEncodedFormEntity(params, "utf-8"));//////
.........................................
后台jsp:..............
nickname=new String(nickname.getBytes("iso-8859-1"),"utf-8"); //对昵称进行转码？？？？？
content=new String(content.getBytes("iso-8859-1"),"utf-8"); //对内容进行转码？？？？？
....................................
/////前面用了utf-8编码，这边怎么又先用iso-8859-1把字符串转化为字节数组，又用utf-8把字节数组转换为字符串，为什么这样做呢？？？

Answer 1

因为 JSP 默认取到的是iso-8859-1的，所以要先按iso-8859-1取出来，再转成utf-8