Java怎么获取url后面参数

?Java?,??????????URL?????:

1. ??java.net.URL?????URL??,??:

URL url = new URL("http://example.com?param1=value1¶m2=value2");

2. ??url.getQuery()????URL?????,?????,??:

String query = url.getQuery(); // ?? "param1=value1¶m2=value2"

3. ??java.net.URLDecoder??????????,??:

String decodedQuery = URLDecoder.decode(query, "UTF-8"); // ????? "param1=value1¶m2=value2"

4. ???????????"&"??????,??????????,??:

String[] params = decodedQuery.split("&"); // ??????? ["param1=value1", "param2=value2"]

5. ??????,????????????,??:

for (String param : params) {
    String[] keyValue = https://www.yisu.com/ask/param.split("="); // ?????? ["param1", "value1"] ?? ["param2", "value2"]
    
    String key = keyValue[0]; // ????
    String value = https://www.yisu.com/ask/keyValue[1]; // ????"Key: " + key);
    System.out.println("Value: " + value);
}

????????????:

Key: param1
Value: value1
Key: param2
Value: value2

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