有两种实现的方法：
自己添加额外jar包:javabase64-1.3.1
使用jdk自带的类，但通常都会报找不到类，解决方法就是：http://blog.csdn.net/a0501bqzhxy/article/details/6441526
< buildpath --> access rule --> add --> accessible --> ** >
方式<一>：
package com.lzj.www.base64.test;
import it.sauronsoftware.base64.Base64;
import org.junit.Test;
public class BASE64Test {
public String ecodeObject(String object){
return Base64.encode(object);
}
public String decodeObject(String object){
return Base64.decode(object);
}
@Test
public void test(){
System.out.println(ecodeObject("hello"));
}
@Test
public void test_decode(){
System.out.println(decodeObject(ecodeObject("hello")));
}
}
方式<二>：
package com.lzj.www.base64.test;
import org.junit.Test;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class BASE64Test {
public String ecodeObject_2(String object){
byte[] b = null;
if(object != null){
b = object.getBytes();
}
return new BASE64Encoder().encode(b);
}
public String decodeObject_2(String object){
byte[] b = null;
String result = null;
if(object != null){
try {
b = new BASE64Decoder().decodeBuffer(object);
result = new String(b, "utf-8");
} catch (Exception e) {
e.printStackTrace();
}
}
return result;
}
@Test
public void test(){
System.out.println(ecodeObject_2("hello"));
}
@Test
public void test_decode(){
System.out.println(decodeObject_2(ecodeObject_2("hello")));
}
}
原文：http://www.cnblogs.com/D-Key/p/4029696.html