使用Fiddler抓java程序中的https包，openfeign请求的https包，golang的http请求的代理

╰半橙微兮° 2022-11-09 01:00 191阅读 0赞

## 问题： ##

直接使用fiddler 抓取 java中的https包会报无证书异常，解决办法是导入Fiddler的证书到 java 中

**1.导出Fiddler证书到桌面**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70][]

**2、把证书复制到D盘根目录**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d0bDE5OTI_size_16_color_FFFFFF_t_70 1][]

**3.打开cmd，执行以下命令**

cd   %JAVA_HOME%\jre\lib\security
    keytool  -import  -file  D:\FiddlerRoot.cer -keystore cacerts -alias Fiddler

**4.输入默认密码，按y回车**

changeit

**5.在java代码中添加以下代码即可抓https包**

System.setProperty("http.proxyHost", "127.0.0.1");
    System.setProperty("https.proxyHost", "127.0.0.1");
    System.setProperty("http.proxyPort", "8888");
    System.setProperty("https.proxyPort", "8888");

**这样fiddler就能捕获java程序里发起的https的请求了！！！**

**6、在go代码里添加以下代码即可抓取https包**

package main
    
    import (
    	"io/ioutil"
    	"log"
    	"net/http"
    	"net/url"
    )
    
    func main() {
    
    	request, err := http.NewRequest(http.MethodGet, "https://www.baidu.com", nil)
    	if err != nil{
    		panic(err)
    	}
    	httpClient := &http.Client{Transport: &http.Transport{Proxy: func(request *http.Request) (i *url.URL, e error) {
    		return url.Parse("http://127.0.0.1:8888")
    	}}}
    
    	response, _ := httpClient.Do(request)
    
    	bytes, _ := ioutil.ReadAll(response.Body)
    	log.Println(string(bytes))
    }

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