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request.go
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request.go
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/**
* golang版本的curl请求库
* Request构造类,用于设置请求参数,发起http请求
* @author mike <[email protected]>
* @blog http://idoubi.cc
*/
package curl
import (
"bytes"
"encoding/json"
"errors"
"io"
"net"
"net/http"
"time"
)
// Request构造类
type Request struct {
cli *http.Client
req *http.Request
Raw *http.Request
Method string
Url string
dialTimeout time.Duration
responseTimeOut time.Duration
Headers map[string]string
Cookies map[string]string
Queries map[string]string
PostData map[string]interface{}
}
// 创建一个Request实例
func NewRequest() *Request {
r := &Request{}
r.dialTimeout = 5
r.responseTimeOut = 5
return r
}
// 设置请求方法
func (this *Request) SetMethod(method string) *Request {
this.Method = method
return this
}
// 设置请求地址
func (this *Request) SetUrl(url string) *Request {
this.Url = url
return this
}
// 设置请求头
func (this *Request) SetHeaders(headers map[string]string) *Request {
this.Headers = headers
return this
}
// 将用户自定义请求头添加到http.Request实例上
func (this *Request) setHeaders() error {
for k, v := range this.Headers {
this.req.Header.Set(k, v)
}
return nil
}
// 设置请求cookies
func (this *Request) SetCookies(cookies map[string]string) *Request {
this.Cookies = cookies
return this
}
// 将用户自定义cookies添加到http.Request实例上
func (this *Request) setCookies() error {
for k, v := range this.Cookies {
this.req.AddCookie(&http.Cookie{
Name: k,
Value: v,
})
}
return nil
}
// 设置url查询参数
func (this *Request) SetQueries(queries map[string]string) *Request {
this.Queries = queries
return this
}
// 将用户自定义url查询参数添加到http.Request上
func (this *Request) setQueries() error {
q := this.req.URL.Query()
for k, v := range this.Queries {
q.Add(k, v)
}
this.req.URL.RawQuery = q.Encode()
return nil
}
// 设置post请求的提交数据
func (this *Request) SetPostData(postData map[string]interface{}) *Request {
this.PostData = postData
return this
}
// 发起get请求
func (this *Request) Get() (*Response, error) {
return this.Send(this.Url, http.MethodGet)
}
// 发起Delete请求
func (this *Request) Delete() (*Response, error) {
return this.Send(this.Url, http.MethodDelete)
}
// 发起Delete请求
func (this *Request) Put() (*Response, error) {
return this.Send(this.Url, http.MethodPut)
}
// 发起post请求
func (this *Request) Post() (*Response, error) {
return this.Send(this.Url, http.MethodPost)
}
// 发起put请求
func (this *Request) PUT() (*Response, error) {
return this.Send(this.Url, http.MethodPut)
}
// 发起put请求
func (this *Request) PATCH() (*Response, error) {
return this.Send(this.Url, http.MethodPatch)
}
//SetDialTimeOut
func (this *Request) SetDialTimeOut(TimeOutSecond int) {
this.dialTimeout = time.Duration(TimeOutSecond)
}
//SetResponseTimeOut
func (this *Request) SetResponseTimeOut(TimeOutSecond int) {
this.responseTimeOut = time.Duration(TimeOutSecond)
}
// 发起请求
func (this *Request) Send(url string, method string) (*Response, error) {
// 检测请求url是否填了
if url == "" {
return nil, errors.New("Lack of request url")
}
// 检测请求方式是否填了
if method == "" {
return nil, errors.New("Lack of request method")
}
// 初始化Response对象
response := NewResponse()
// 初始化http.Client对象
this.cli = &http.Client{
////////
Transport: &http.Transport{
Dial: func(netw, addr string) (net.Conn, error) {
conn, err := net.DialTimeout(netw, addr, time.Second*this.dialTimeout)
if err != nil {
return nil, err
}
conn.SetDeadline(time.Now().Add(time.Second * this.dialTimeout))
return conn, nil
},
ResponseHeaderTimeout: time.Second * this.responseTimeOut,
},
////////////
}
// 加载用户自定义的post数据到http.Request
var payload io.Reader
if method == "POST" && this.PostData != nil {
if jData, err := json.Marshal(this.PostData); err != nil {
return nil, err
} else {
payload = bytes.NewReader(jData)
}
} else {
payload = nil
}
if req, err := http.NewRequest(method, url, payload); err != nil {
return nil, err
} else {
this.req = req
}
this.setHeaders()
this.setCookies()
this.setQueries()
this.Raw = this.req
if resp, err := this.cli.Do(this.req); err != nil {
return nil, err
} else {
response.Raw = resp
}
defer response.Raw.Body.Close()
response.parseHeaders()
response.parseBody()
return response, nil
}