彩虹女神跃长空,Go语言进阶之Go语言高性能Web框架Iris项目实战-用户系统EP0 ...

怀念夏天 · 2022-9-16 17:25:26

前文再续，之前一篇我们已经配置好了数据库以及模板引擎，现在可以在逻辑层编写具体业务代码了，博客平台和大多数在线平台一样，都是基于用户账号体系来进行操作，所以我们需要针对用户表完成用户账号的CURD操作。
用户后台模板

首先用户操作逻辑主要在后台展现，所以模板应该单独生成admin文件夹，和前台模板进行逻辑隔离：

cd views
mkdir admin

复制代码

随后创建用户管理页面模板user.html:

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</ul>
<img src="https://www.cnblogs.com/data:image/png;base64,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" width="16" height="16" role="presentation" >
<img src="https://www.cnblogs.com/data:image/png;base64,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" width="16" height="16" role="presentation" >
<form action="/Index_search" method ="GET" >
<input type="search" name="text" placeholder="Search" required="required" >
</form>
</nav>
<header>
</header>
<section>
<ul >
<li>
<label >用户名</label>
<input type="text" id="form-name" placeholder="请输入4-10字符" />
</li>
<li>
<label >密码</label>
<input type="password" id="form-psw" placeholder="请输入6-30字符" />
</li>
</ul>
<button>提交</button>
</section>
</body>

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模板目录架构如下：

└── views
├── admin
│ └── user.html
├── index.html
└── test.html

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views根目录模板为前台模板，而admin目录下模板是为后台模板。
同时前端声明username和password变量，分别绑定用户名和密码：

const App = {
data() {
return {
//用户名
username: "",
//密码
password:""
};
},
created: function() {
console.log("你好，女神");
},
methods: {
},
};

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接着构造用户添加表单，绑定表单字段：

<ul >
<li>
<label >用户名</label>
<input v-model="username" type="text" id="form-name" placeholder="请输入4-10字符" />
</li>
<li>
<label >密码</label>
<input v-model="password" type="password" id="form-psw" placeholder="请输入6-30字符" />
</li>
</ul>
<button @click="submit">提交</button>

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这里通过v-model关键字将表单和变量做双向绑定，同时为按钮绑定submit提交方法。
如果愿意，我们也可以针对前端的axios库进行二次封装，增加异步请求方法的复用性：

const myaxios = function (url, type, data = {}) {
return new
Promise((resolve) => {
if (type === "get" || type === "delete") {
axios({
method: type,
url: url,
params: data
}).then((result) => {
resolve(result.data);
});
} else {
const params = new URLSearchParams();
for (var key in data) {
params.append(key,data[key]);
}
axios({
method: type,
url: url,
data:params
}).then((result) => {
resolve(result.data);
});
}
});
}
app.config.globalProperties.myaxios = myaxios;

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这样，我们就可以随时使用this关键字来向后台发起异步请求了。
接着，编写后台视图，将用户后台模板渲染出来：

app.Get("/admin/user/", func(ctx iris.Context) {
ctx.View("/admin/user.html")
})

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编译后，访问 http://localhost:5000/admin/user/，如图所示：

用户后台接口

后台接口主要负责接收前端请求的参数，然后根据请求方式类型来决定用户表的操作动作，首先构建添加接口：

app.Post("/admin/user_action/", func(ctx iris.Context) {
username := ctx.PostValue("username")
password := ctx.PostValue("password")
fmt.Println(username, password)
ret := map[string]string{
"errcode": "0",
"msg": "ok",
}
ctx.JSON(ret)
})

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这里使用Post方式匹配路由/admin/user_action/，随后通过ctx结构体的PostValue函数来获取具体的参数key，然后利用ctx.JSON函数将字典序列化为Json，再返回给前端。
前端则使用之前封装好的myaxios内置方法向后端发起异步请求：

submit:function(){
this.myaxios("http://localhost:5000/admin/user_action/","post",{"username":this.username,"password":this.password}).then(data => {
console.log(data)
});
}

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后台返回：

Now listening on: http://localhost:5000
Application started. Press CTRL+C to shut down.
19:30:58 app | admin admin

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可以看到，后端打印出了前端请求的用户名和密码，接着就是入库操作：

app.Post("/admin/user_action/", func(ctx iris.Context) {
username := ctx.PostValue("username")
password := ctx.PostValue("password")
fmt.Println(username, password)
user := &model.User{Username: username, Password: password}
res := db.Create(user)
fmt.Println(res.Error)
ret := map[string]string{
"errcode": "0",
"msg": "ok",
}
ctx.JSON(ret)
})

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这里初始化结构体变量user后，利用db.Create函数进行入库操作。
随后检查入库结果：

MySQL [irisblog]> select * from user;
+----+---------------------+---------------------+------------+----------+----------+
| id | created_at | updated_at | deleted_at | username | password |
+----+---------------------+---------------------+------------+----------+----------+
| 13 | 2022-08-22 19:33:16 | 2022-08-22 19:33:16 | NULL | admin | admin |
+----+---------------------+---------------------+------------+----------+----------+
1 row in set (0.00 sec)

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入库操作虽然成功了，但显然，密码不能使用明文，否则不就步CSDN的后尘贻笑大方了吗？
添加md5加密逻辑：

w := md5.New()
io.WriteString(w, password) //将str写入到w中
md5str := fmt.Sprintf("%x", w.Sum(nil))

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注意导入"crypto/md5"和"io"两个标准库包。
完成代码：

app.Post("/admin/user_action/", func(ctx iris.Context) {
username := ctx.PostValue("username")
password := ctx.PostValue("password")
fmt.Println(username, password)
w := md5.New()
io.WriteString(w, password) //将str写入到w中
md5str := fmt.Sprintf("%x", w.Sum(nil))
user := &model.User{Username: username, Password: md5str}
res := db.Create(user)
fmt.Println(res.Error)
ret := map[string]string{
"errcode": "0",
"msg": "ok",
}
ctx.JSON(ret)
})

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重新编译后，再次发起请求，检查入库结果：

MySQL [irisblog]> select * from user;
+----+---------------------+---------------------+------------+----------+----------------------------------+
| id | created_at | updated_at | deleted_at | username | password |
+----+---------------------+---------------------+------------+----------+----------------------------------+
| 16 | 2022-08-22 19:41:40 | 2022-08-22 19:41:40 | NULL | admin | 21232f297a57a5a743894a0e4a801fc3 |
+----+---------------------+---------------------+------------+----------+----------------------------------+
1 row in set (0.00 sec)

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完成添加逻辑后，可以将用户列表批量查询出来：

app.Get("/admin/userlist/", func(ctx iris.Context) {
var users []model.User
res := db.Find(&users)
ctx.JSON(res)
})

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注意这里声明一个切片嵌套结构users，切片的每一个元素是用户结构体，接口返回：

{
Value: [
{
ID: 16,
CreatedAt: "2022-08-22T19:41:40+08:00",
UpdatedAt: "2022-08-22T19:41:40+08:00",
DeletedAt: null,
Username: "admin",
Password: "21232f297a57a5a743894a0e4a801fc3"
},
{
ID: 17,
CreatedAt: "2022-08-22T19:48:25+08:00",
UpdatedAt: "2022-08-22T19:48:25+08:00",
DeletedAt: null,
Username: "888123",
Password: "202cb962ac59075b964b07152d234b70"
},
{
ID: 18,
CreatedAt: "2022-08-22T19:48:28+08:00",
UpdatedAt: "2022-08-22T19:48:28+08:00",
DeletedAt: null,
Username: "admin123",
Password: "21232f297a57a5a743894a0e4a801fc3"
}
],
Error: null,
RowsAffected: 3
}

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随后，前端可以通过异步请求回调赋值将用户列表展示在页面中：

const App = { data() { return { //用户名 username: "", //密码 password:"", //用户列表 userlist:[] }; }, created: function() { console.log("你好，女神"); this.get_userlist(); }, methods: { get_userlist:function(){ this.myaxios("http://localhost:5000/admin/userlist/","get",).then(data => { console.log(data) this.userlist = data.Value }); }, submit:function(){
this.myaxios("http://localhost:5000/admin/user_action/","post",{"username":this.username,"password":this.password}).then(data => {
console.log(data)
});
} }, };

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随后，在页面中渲染userlist变量：

<table >
<tr>
<th>用户id</th>
<th>用户名</th>
<th>添加时间</th>
</tr>
<tr v-for="(item,index) in userlist">
<td>{{ item.ID }}</td>
<td>{{ item.Username }}</td>
<td>{{ item.CreatedAt }}</td>
</tr>
</table>

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请求 http://localhost:5000/admin/user/ 如图所示：

Vue.js+Iris的前后端联调流程就跑通了，当然有些地方还需要封装，比如md5加密环节，后续登录模块也依然会依赖md5包，项目根目录下建立mytool目录：

mkdir mytool
cd mytool

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将md5加密封装为函数：

package mytool
import (
"crypto/md5"
"fmt"
"io"
)
func Make_password(password string) string {
w := md5.New()
io.WriteString(w, password) //将str写入到w中
md5str := fmt.Sprintf("%x", w.Sum(nil))
return md5str
}

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随后通过包名进行调用：

md5str := mytool.Make_password(password)

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结语

至此，前后端分离的用户系统就构建好了，开发效率层面，基于Go lang的Iris框架并不逊色于任何动态语言框架，语法的简明程度有过之而无不及，性能层面更是不遑多让，该项目已开源在Github：https://github.com/zcxey2911/IrisBlog ，与君共觞，和君共勉。

免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！

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