效果图
Cookie读写
go
package main
import (
"embed"
"encoding/json"
"fmt"
"github.com/energye/energy/v2/cef"
"github.com/energye/energy/v2/cef/ipc"
"github.com/energye/energy/v2/cef/ipc/context"
"github.com/energye/energy/v2/common"
"github.com/energye/energy/v2/consts"
"github.com/energye/energy/v2/pkgs/assetserve"
"github.com/energye/golcl/lcl"
"time"
)
//资源目录,内置到执行程序中
//go:embed resources
var resources embed.FS
//这个示例使用了几个事件来演示下载文件
func main() {
//全局初始化 每个应用都必须调用的
cef.GlobalInit(nil, &resources)
//创建应用
cefApp := cef.NewApplication()
//主窗口的配置
//指定一个URL地址,或本地html文件目录
cef.BrowserWindow.Config.Url = "http://localhost:22022/cookie.html"
if common.IsLinux() {
cef.BrowserWindow.Config.IconFS = "resources/icon.png"
} else {
cef.BrowserWindow.Config.IconFS = "resources/icon.ico"
}
//监听获取cookie事件
ipc.On("VisitCookie", func(context context.IContext) {
fmt.Println("VisitCookie")
info := cef.BrowserWindow.GetWindowInfo(context.BrowserId())
info.Chromium().VisitURLCookies("https://www.baidu.com", true, 1)
info.Chromium().VisitAllCookies(1)
context.Result("执行成功,结果将在 SetOnCookiesVisited 事件中获得")
})
//监听删除cookie
ipc.On("DeleteCookie", func(context context.IContext) {
info := cef.BrowserWindow.GetWindowInfo(context.BrowserId())
info.Chromium().DeleteCookies("", "", false)
context.Result("执行成功,结果将在 SetOnCookiesDeleted 事件中获得")
})
//监听设置cookie
ipc.On("SetCookie", func(context context.IContext) {
info := cef.BrowserWindow.GetWindowInfo(context.BrowserId())
info.Chromium().SetCookie("https://www.example.com", "example_cookie_name", "1234", "", "/", true, true, false, time.Now(), time.Now(), time.Now(), consts.Ccss_CEF_COOKIE_SAME_SITE_UNSPECIFIED, consts.CEF_COOKIE_PRIORITY_MEDIUM, false, 0)
info.Chromium().SetCookie("https://www.example.com", "example_cookie_name2", "123422", "", "/", true, true, false, time.Now(), time.Now(), time.Now(), consts.Ccss_CEF_COOKIE_SAME_SITE_UNSPECIFIED, consts.CEF_COOKIE_PRIORITY_MEDIUM, false, 0)
info.Chromium().SetCookie("https://www.baidu.com", "demo_name", "4321", "", "/", true, true, false, time.Now(), time.Now(), time.Now(), consts.Ccss_CEF_COOKIE_SAME_SITE_NO_RESTRICTION, consts.CEF_COOKIE_PRIORITY_MEDIUM, false, 1)
context.Result("执行成功,结果将在 SetOnCookieSet 事件中获得")
})
//在SetBrowserInit中设置cookie事件,这些事件将返回操作后的结果
cef.BrowserWindow.SetBrowserInit(func(event *cef.BrowserEvent, browserWindow cef.IBrowserWindow) {
//获取cookie时触发
event.SetOnCookiesVisited(func(sender lcl.IObject, cookie *cef.ICefCookie) {
fmt.Printf("SetOnCookiesVisited: %+v\n", cookie)
//将结果返回到html中
data, _ := json.Marshal(cookie)
ipc.Emit("VisitCookieResult", string(data))
})
//删除cookie时触发
event.SetOnCookiesDeleted(func(sender lcl.IObject, numDeleted int32) {
fmt.Printf("SetOnCookiesDeleted: %+v\n", numDeleted)
})
//设置cookie时触发
event.SetOnCookieSet(func(sender lcl.IObject, success bool, ID int32) {
fmt.Println("SetOnCookieSet: ", success, ID)
})
event.SetOnCookiesFlushed(func(sender lcl.IObject) {
fmt.Println("OnCookiesFlushed")
})
event.SetOnCookieVisitorDestroyed(func(sender lcl.IObject, ID int32) {
fmt.Println("OnCookieVisitorDestroyed")
})
})
//在主进程启动成功之后执行
//在这里启动内置http服务
//内置http服务需要使用 go:embed resources 内置资源到执行程序中
cef.SetBrowserProcessStartAfterCallback(func(b bool) {
fmt.Println("主进程启动 创建一个内置http服务")
//通过内置http服务加载资源
server := assetserve.NewAssetsHttpServer()
server.PORT = 22022 //服务端口号
server.AssetsFSName = "resources" //必须设置目录名和资源文件夹同名
server.Assets = &resources
go server.StartHttpServer()
})
//运行应用
cef.Run(cefApp)
}
html示例代码
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>cookie</title>
<style type="text/css">
button {
margin: 10px;
}
</style>
<script type="application/javascript">
function message() {
return document.getElementById("message");
}
//显示cookie
function VisitCookie() {
message().innerHTML = "";
//触发go中监听的事件
ipc.emit("VisitCookie", function (data) {
message().innerHTML = data;
});
}
//显示cookie的结果,从go中返回到html
ipc.on("VisitCookieResult", function (data) {
message().innerHTML = message().innerHTML + data + "<br><br>";
});
//删除cookie
function DeleteCookie() {
message().innerHTML = "";
//触发go中监听的事件
ipc.emit("DeleteCookie", function (data) {
message().innerHTML = data;
});
}
//设置cookie
function SetCookie() {
message().innerHTML = "";
//触发go中监听的事件
ipc.emit("SetCookie", function (data) {
message().innerHTML = data;
});
}
</script>
</head>
<body style="overflow: hidden;margin: 0px;padding: 0px;">
<button onclick="VisitCookie()">查看cookie</button>
<button onclick="DeleteCookie()">删除cookie</button>
<button onclick="SetCookie()">设置cookie</button>
<br>
<div id="message">
</div>
</body>
</html>
说明
在主进程中,使用事件机制监听
ipc.IPC.Browser().SetOnEvent
事件监听在Go中监听的事件, 用于在Go的其它进程或渲染(Render)进程(web html)中调用
event.On
获取主窗口信息
在主窗口对象中获得chromium对象 var info = cef.BrowserWindow.GetWindowInfo(context.BrowserId())
获取cookie,将触发OnCookiesVisited事件
info.Chromium().VisitURLCookies info.Chromium().VisitAllCookies
删除cookie,将触发OnCookiesDeleted事件
info.Chromium().DeleteCookies
设置cookie,将触发OnCookieSet事件
info.Chromium().SetCookie
在回调函数BrowserWindow.SetBrowserInit设置事件监听
cef.BrowserWindow.SetBrowserInit
获取cookie时触发事件
event.SetOnCookiesVisited
删除cookie时触发事件
event.SetOnCookiesDeleted
设置cookie时触发事件
event.SetOnCookieSet
html中js事件触发
ipc.emit
进程启动后执行回调
cef.SetBrowserProcessStartAfterCallback 在这里创建了内置http服务