java string garbled solution: (Recommended: java video tutorial)
System.out.println(str);
String str1 = new String(str.getBytes("ISO-8859-1"), "utf-8");
System.out.println(str1);
String str2 = new String(str.getBytes("gb2312"), "utf-8");
System.out.println(str2);
String str3 = new String(str.getBytes("gbk"), "utf-8");
System.out.println(str3);str.getBytes(charsetName);charsetName is the original character Encoding
"utf-8" is to convert str to utf-8 encoding.
new String(str.getBytes("gbk"),"iso8859-1")
Step one: byte[] bytes=str.getBytes("gbk")
Tell the java virtual machine to convert Chinese into a byte array in the "gbk" method. One Chinese character corresponds to two bytes.
The corresponding second step is:
When String s=new String(bytes, "iso8859-1"), each byte is assembled into a "?" . At this time, s is several "?". We can regard "?" as a special Chinese character, and the information it represents can be restored without loss.
java.lang.String.getBytes(String charsetName) method encodes this String into a byte sequence using the specified character set and stores the result into a new byte array.
Declaration
The following is the declaration of the java.lang.String.getBytes() method
public byte[] getBytes(String charsetName) throws UnsupportedEncodingException
Parameters: charset -- This is the name of a supported character set.
Return value: This method returns the resulting byte array.
new String(byte[],decode) method
Compared with getBytes, you can restore the "中" character through new String(byte[], decode),
This new String(byte[],decode) actually uses the specified encoding decode to parse byte[] into a string.
Exception: UnsupportedEncodingException -- If the specified character set is not supported.
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