使用commons-codec进行MD5签名

一、maven依耐:

<dependency>
    <groupId>commons-codec</groupId>
     <artifactId>commons-codec</artifactId>
     <version>1.10</version>
 </dependency>

二、签名示例:

String key = UUID.randomUUID().toString().replaceAll("-", "");
System.out.println(key);//2f012e4a250a475199dbd665589e7445
String signData = "aa=111&bb=ccc&key=" + key;
String sign = DigestUtils.md5Hex(signData);
System.out.println(sign);//055c656aead59bd314a602f4300dc543

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转载自blog.csdn.net/wgq3773/article/details/80777070