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package class05;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.security.Security;
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// 这个包的jar，你需要自己下载一下，导入到项目中
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import javax.xml.bind.DatatypeConverter;
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public class Hash {
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private MessageDigest hash;
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public Hash(String algorithm) {
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try {
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hash = MessageDigest.getInstance(algorithm);
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} catch (NoSuchAlgorithmException e) {
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e.printStackTrace();
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}
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}
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public String hashCode(String input) {
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return DatatypeConverter.printHexBinary(hash.digest(input.getBytes())).toUpperCase();
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}
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public static void main(String[] args) {
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System.out.println("支持的算法 : ");
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for (String str : Security.getAlgorithms("MessageDigest")) {
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System.out.println(str);
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}
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System.out.println("=======");
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String algorithm = "SHA-256";
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Hash hash = new Hash(algorithm);
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String input1 = "zuochengyunzuochengyun1";
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String input2 = "zuochengyunzuochengyun2";
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String input3 = "zuochengyunzuochengyun3";
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String input4 = "zuochengyunzuochengyun4";
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String input5 = "zuochengyunzuochengyun5";
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System.out.println(hash.hashCode(input1));
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System.out.println(hash.hashCode(input2));
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System.out.println(hash.hashCode(input3));
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System.out.println(hash.hashCode(input4));
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System.out.println(hash.hashCode(input5));
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}
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}
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