参考：http://blog.csdn.net/u012364841/article/details/41964477

问题：

在读取查看类编译位置的时候，出现编码的问题，原因是在读取的时候，java自动转为Base64的编码形式。

输出编码如下：

/D:/JAVA%ef%bc%88%e5%b8%85%e5%b0%8f%e5%8b%87%ef%bc%89/java%e7%ab%8b%e6%95%8f%e8%80%81%e5%b8%88/java%20%e5%b7%a5%e4%bd%9c%e7%a9%ba%e9%97%b4/Warehouse/build/classes/

代码如下：

package com.lnsf.warehose.service.test2;
import static org.junit.Assert.*;
import java.io.UnsupportedEncodingException;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.lnsf.warehose.service.test.TestInterface0923;
/**
* @author 渴望飞的鱼 
* @version 创建时间：2017年9月23日 下午1:49:01
* @introduction
*/

public class TestSpringIoC {
public TestSpringIoC() throws UnsupportedEncodingException{
    //查看编译位置
String str=TestSpringIoC.class.getClass().getResource("/").getPath();

         //没有处理过的编码形式
System.out.println(str); 
System.out.println("查看编译位置："+java.net.URLDecoder.decode(str,"utf-8"));
}
@Test
public void test() {
//springioc.xml在src路径下时候
//ApplicationContext context = new ClassPathXmlApplicationContext("springioc.xml");
ApplicationContext context = new ClassPathXmlApplicationContext("com/lnsf/warehose/service/test/springioc.xml");
// ApplicationContext  context=new ClassPathXmlApplicationContext("classpath:/*.xml");
TestInterface0923 TestInterface0923=(com.lnsf.warehose.service.test.TestInterface0923) context.getBean("TestInterface0923");
System.out.println(TestInterface0923.getString("嘻嘻，依赖注入啊"));
}
}

运行结果如下：

/D:/JAVA%ef%bc%88%e5%b8%85%e5%b0%8f%e5%8b%87%ef%bc%89/java%e7%ab%8b%e6%95%8f%e8%80%81%e5%b8%88/java%20%e5%b7%a5%e4%bd%9c%e7%a9%ba%e9%97%b4/Warehouse/build/classes/
查看编译位置：/D:/JAVA（帅小勇）/java立敏老师/java 工作空间/Warehouse/build/classes/
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
testInterface0923Impl  get the string is: 嘻嘻，依赖注入啊 .

处理方法：

1.可以API中方法用encode和decode方法即可实现转换并输出。

System.out.println(java.net.URLEncoder.encode("您好","utf-8"));
System.out.println(java.net.URLDecoder.decode("%E6%82%A8%E5%A5%BD","utf-8"));

2.通过URLtoUTF8类中的toUtf8String和unescape两个方法，分别实现汉字转成URL编码和URL编码转成汉字的功能。在main()方法更改参数即可，完成测试转换。（此方法转自：http://www.jb51.net/article/42495.htm）

package test;

public class URLtoUTF8 {
    //转换为%E4%BD%A0形式
    public static String toUtf8String(String s) {
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            if (c >= 0 && c <= 255) {
                sb.append(c);
            } else {
                byte[] b;
                try {
                    b = String.valueOf(c).getBytes("utf-8");
                } catch (Exception ex) {
                    System.out.println(ex);
                    b = new byte[0];
                }
                for (int j = 0; j < b.length; j++) {
                    int k = b[j];
                    if (k < 0)
                        k += 256;
                    sb.append("%" + Integer.toHexString(k).toUpperCase());
                }
            }
        }
        return sb.toString();
    }

    //将%E4%BD%A0转换为汉字 
public static String unescape(String s) {
StringBuffer sbuf = new StringBuffer();
int l = s.length();
int ch = -1;
int b, sumb = 0;
for (int i = 0, more = -1; i < l; i++) {
/* Get next byte b from URL segment s */
switch (ch = s.charAt(i)) {
case '%':
ch = s.charAt(++i);
int hb = (Character.isDigit((char) ch) ? ch - '0'
: 10 + Character.toLowerCase((char) ch) - 'a') & 0xF;
ch = s.charAt(++i);
int lb = (Character.isDigit((char) ch) ? ch - '0'
: 10 + Character.toLowerCase((char) ch) - 'a') & 0xF;
b = (hb << 4) | lb;
break;
case '+':
b = ' ';
break;
default:
b = ch;
}
/* Decode byte b as UTF-8, sumb collects incomplete chars */
if ((b & 0xc0) == 0x80) { // 10xxxxxx (continuation byte)   
sumb = (sumb << 6) | (b & 0x3f); // Add 6 bits to sumb   
if (--more == 0)
sbuf.append((char) sumb); // Add char to sbuf   
} else if ((b & 0x80) == 0x00) { // 0xxxxxxx (yields 7 bits)   
sbuf.append((char) b); // Store in sbuf   
} else if ((b & 0xe0) == 0xc0) { // 110xxxxx (yields 5 bits)   
sumb = b & 0x1f;
more = 1; // Expect 1 more byte   
} else if ((b & 0xf0) == 0xe0) { // 1110xxxx (yields 4 bits)   
sumb = b & 0x0f;
more = 2; // Expect 2 more bytes   
} else if ((b & 0xf8) == 0xf0) { // 11110xxx (yields 3 bits)   
sumb = b & 0x07;
more = 3; // Expect 3 more bytes   
} else if ((b & 0xfc) == 0xf8) { // 111110xx (yields 2 bits)   
sumb = b & 0x03;
more = 4; // Expect 4 more bytes   
} else /*if ((b & 0xfe) == 0xfc)*/{ // 1111110x (yields 1 bit)   
sumb = b & 0x01;
more = 5; // Expect 5 more bytes   
}
/* We don't test if the UTF-8 encoding is well-formed */
}
return sbuf.toString();
}

public static void main(String[] args){
System.out.println(URLtoUTF8.toUtf8String("你"));
System.out.println(URLtoUTF8.unescape("%E4%BD%A0%20%E5%A5%BD"));

}
}

示例结果：

%E4%BD%A0
你 好