前端使用encodeURI進行編碼

var param = encodeURI(param);
$.ajax({
        url: 'url',
        methodtype: "POST",
        async: false,
        timeout: 60000,
        contentType: "application/json",
        data: {'param':param},
        success: function(data) {

        },
        error: function(data) {

        }
    });
 

後臺java.net.URLDecoder進行解碼
編解碼工具

import java.io.UnsupportedEncodingException;
import java.net.URLDecoder;
import java.net.URLEncoder;

import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Base64;
import org.apache.commons.codec.binary.Hex;
import org.apache.commons.lang3.StringEscapeUtils;

/**
 * 封裝各種格式的編碼解碼工具類.
 * 1.Commons-Codec的 hex/base64 編碼
 * 2.自制的base62 編碼
 * 3.Commons-Lang的xml/html escape
 * 4.JDK提供的URLEncoder
 * 
 */
 

public class Encodes {

    private static final String DEFAULT_URL_ENCODING = "UTF-8";
    private static final char[] BASE62 = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz".toCharArray();

    /**
     * Hex編碼.
     */
    public static String encodeHex(byte[] input) {
        return
 
 new String(Hex.encodeHex(input));
    }

    /**
     * Hex解碼.
     */
    public static byte[] decodeHex(String input) {
        try {
            return Hex.decodeHex(input.toCharArray());
        } catch (DecoderException e) {
            throw Exceptions.unchecked(e);
        }
    }

    /**
     * Base64編碼.
     */
    public static String encodeBase64(byte[] input) {
        return new String(Base64.encodeBase64(input));
    }

    /**
     * Base64編碼.
     */
    public static String encodeBase64(String input) {
        try {
            return new String(Base64.encodeBase64(input.getBytes(DEFAULT_URL_ENCODING)));
        } catch (UnsupportedEncodingException e) {
            return "";
        }
    }

//  /**
//   * Base64編碼, URL安全(將Base64中的URL非法字元'+'和'/'轉為'-'和'_', 見RFC3548).
//   */
//  public static String encodeUrlSafeBase64(byte[] input) {
//      return Base64.encodeBase64URLSafe(input);
//  }

    /**
     * Base64解碼.
     */
    public static byte[] decodeBase64(String input) {
        return Base64.decodeBase64(input.getBytes());
    }

    /**
     * Base64解碼.
     */
    public static String decodeBase64String(String input) {
        try {
            return new String(Base64.decodeBase64(input.getBytes()), DEFAULT_URL_ENCODING);
        } catch (UnsupportedEncodingException e) {
            return "";
        }
    }

    /**
     * Base62編碼。
     */
    public static String encodeBase62(byte[] input) {
        char[] chars = new char[input.length];
        for (int i = 0; i < input.length; i++) {
            chars[i] = BASE62[((input[i] & 0xFF) % BASE62.length)];
        }
        return new String(chars);
    }

    /**
     * Html 轉碼.  例如將 < 轉成 &lt
     */
    public static String escapeHtml(String html) {
        return StringEscapeUtils.escapeHtml4(html);
    }

    /**
     * Html 解碼.
     */
    public static String unescapeHtml(String htmlEscaped) {
        return StringEscapeUtils.unescapeHtml4(htmlEscaped);
    }

    /**
     * Xml 轉碼.
     */
    public static String escapeXml(String xml) {
        return StringEscapeUtils.escapeXml10(xml);
    }

    /**
     * Xml 解碼.
     */
    public static String unescapeXml(String xmlEscaped) {
        return StringEscapeUtils.unescapeXml(xmlEscaped);
    }

    /**
     * URL 編碼, Encode預設為UTF-8. 
     */
    public static String urlEncode(String part) {
        try {
            return URLEncoder.encode(part, DEFAULT_URL_ENCODING);
        } catch (UnsupportedEncodingException e) {
            throw Exceptions.unchecked(e);
        }
    }

    /**
     * URL 解碼, Encode預設為UTF-8. 
     */
    public static String urlDecode(String part) {

        try {
            return URLDecoder.decode(part, DEFAULT_URL_ENCODING);
        } catch (UnsupportedEncodingException e) {
            throw Exceptions.unchecked(e);
        }
    }
}