RestTemplate/httpclient请求：请求参数中的特殊字符处理

RestTemplate/httpclient请求：请求参数中的特殊字符处理

特殊url：

url中有：SuperPNR_ID%3D202006151522247812 （%3D）

url中有：|（竖线）

http://119.254.234.92:9280/easypay/mobilepay.servlet?OrderAmount=1090&AppType=B2C&BankId=TENPAYGW_MINIPROGRAM&BillNo=2020061500011970&Ext1=10.221.150.211&Ext2=&Lan=CN&Msg=SuperPNR_ID%3D202006151522247812&OrderCurtype=CNY&OrderNo=202006151522389979&OrderType=1|0|&OrgId=XZAIRB2C&OrderDate=20200615&OrderTime=152228&ordername=Xizang+Airlines+e-ticket&Orderinfo=&usrid=o_57z5FJx1rlTpMSzsgsdeiEvKxc&username=&gateid=TENPAYGW_MINIPROGRAM&Version=1.0&ReturnId=id_pay_1000&SIGNATURE=f16fa3e8a299c44ebe41a0c3ea678bf6

请注意url中有%3D，还有|中竖线。

RestTemplate

在使用restTemplate请求时，会对%3D进行转义，

通过UriComponentsBuilder创建URI对象，这样RestTemplate不会自动进行urlencode

// 通过UriComponentsBuilder创建URI对象，这样RestTemplate不会自动进行urlencode
UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromHttpUrl(requestUrl);
或者
UriComponentsBuilder uriComponentsBuilder = UriComponentsBuilder.fromUriString(requestUrl);

URI uri = uriComponentsBuilder.build(true).toUri();　　

但同时存在另一个问题，参数中有“|”，竖线，请求失败，直接报错：

java.lang.IllegalArgumentException: Invalid uri 'http://xxxxxx' : Invalid query 异常通过URLEncoder来解决。

　　

这是需要对含有“|”竖线的，参数进行单独转码:

URLEncoder.encode("|","utf-8");

　　

HttpClient

一样的情况，碰到参数“|”，也是会报错（虽然%3D不会被转义了）。

我们需要些个类来处理url中的参数，对"|",进行转码

public class UrlUtils {


    public static class UrlEntity {
        /**
         * 基础url
         */
        public String baseUrl;
        /**
         * url参数
         */
        public Map<String, String> params;
    }

    /**
     * 解析url
     *
     * @param url
     * @return
     */
    public static UrlEntity parse(String url) {
        UrlEntity entity = new UrlEntity();
        if (url == null) {
            return entity;
        }
        url = url.trim();
        if (url.equals("")) {
            return entity;
        }
        String[] urlParts = url.split("\?");
        entity.baseUrl = urlParts[0];
        //没有参数
        if (urlParts.length == 1) {
            return entity;
        }
        //有参数
        String[] params = urlParts[1].split("&");
        entity.params = new HashMap();
        for (String param : params) {
            String[] keyValue = param.split("=");
            System.out.println(JSON.toJSONString(keyValue));
            if(keyValue.length==1){
                entity.params.put(keyValue[0], "");
                continue;
            }
            if(keyValue[1].contains("|")){
                try {
                    keyValue[1] = URLEncoder.encode(keyValue[1],"utf-8");
                } catch (UnsupportedEncodingException e) {
                    e.printStackTrace();
                }
            }
            entity.params.put(keyValue[0], keyValue[1]);
        }

        return entity;
    }

    public static String getUrl(String url){
        UrlEntity params =  parse(url);
        String baseUrl = params.baseUrl;
        StringBuffer strtTotalURL = new StringBuffer();
        if(params.params!=null){
            for (Map.Entry<String, String> m:params.params.entrySet()){
                String temp = null;
                if(m.getValue().contains("|")){
                    try {
                        temp = m.getKey() + "=" + URLEncoder.encode(m.getValue(),"utf-8") + "&";
                    } catch (UnsupportedEncodingException e) {
                        e.printStackTrace();
                    }
                }else{
                    temp = m.getKey() + "=" + m.getValue() + "&";
                }
                strtTotalURL.append(temp);
            }
        }
        return baseUrl + "?" + strtTotalURL.toString();
    }


    public void main(String[] args){
        String url = "http:\/\/119.254.234.92:9280\/easypay\/mobilepay.servlet?OrderAmount=1090&AppType=B2C&BankId=TENPAYGW_MINIPROGRAM&BillNo=2020061500011970&Ext1=10.221.150.211&Ext2=&Lan=CN&Msg=SuperPNR_ID%3D202006151522247812&OrderCurtype=CNY&OrderNo=202006151522389979&OrderType=1|0|&OrgId=XZAIRB2C&OrderDate=20200615&OrderTime=152228&ordername=Xizang+Airlines+e-ticket&Orderinfo=&usrid=o_57z5FJx1rlTpMSzsgsdeiEvKxc&username=&gateid=TENPAYGW_MINIPROGRAM&Version=1.0&ReturnId=id_pay_1000&SIGNATURE=f16fa3e8a299c44ebe41a0c3ea678bf6";
        System.out.println(getUrl(url));