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    1.keyToolÖ¤Êé¹ÜÀí
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   keytool -genkeypair -alias www.zlex.org  -keyalg RSA -keysize 2048 -sigalg SHA1withRSA -validity 36000 -keystore zlex.keystore  -dname "CN=www.zlex.org,OU=zlex,O=zlex,L=SH,ST=SH,C=CN"
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   keytool -exportcert -alias www.zlex.org -keystore zlex.keystore -file zlex.cer -rfc
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   keytool -printcert -file zlex.cer   
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    keytool -certreq -alias www.zlex.org -keystore zlex.keystore -file zlex.csr -v
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    keytool -importcert  -trustcacerts -alias www.zlex.org -file zlex.cer -keystore zlex.keystore
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   keytool -list -alias www.zlex.org  -keystore zlex.keystore
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     ´Óhttp://www.slproweb.com/products/Win32OpenSSL.htmlÏÂÔØwindows°æOpenSSL
    openssl rand -out private/.rand 1000
    openssl genrsa -aes256 -out private/ca.key.pem 2048
    openssl -req -new -key private/ca.key.pem -out private/ca.csr
    openssl x509 -req -days 10000 -sha1 -extensions    v3_ca -signkey private/ca.key.pem -in private/ca.csr -out 
          certs/ca.cer
    openssl pkcs12 -export -cacerts -inkey private/ca.key.pem -in certs/ca.cer -out certs/ca.p12
    keytool -list -keystore certs/ca.p12 -storetype pkcs12 -v -storepass 123456


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import java.io.*;
public class Test {
    public static String convert(String s) {
        if (s == null || s.length() == 0)
            return s;
        ......

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µÚ1Ìõ  How to Write an Equality Method in Java  
http://www.artima.com/lejava/articles/equality.html
How to Write an Equality Method in Java
by Martin Odersky, Lex Spoon, and Bill Venners
June 1, 2009
Summary
This article describes a technique for overriding the equals method t ......
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