mirror of
https://github.com/kataras/iris.git
synced 2026-01-09 13:05:56 +00:00
Remove big README examples, will be replaced with small quick examples so new users can found easier to get started
Former-commit-id: d5e804babf0edc0765a4195247071e410b27ea27
This commit is contained in:
828
README_ZH.md
828
README_ZH.md
@@ -147,834 +147,6 @@ $ go run main.go
|
||||
|
||||
Iris的一些开发约定可以看看这里[_examples/structuring](_examples/#structuring)。
|
||||
|
||||
### MVC指南
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/kataras/iris"
|
||||
"github.com/kataras/iris/mvc"
|
||||
)
|
||||
|
||||
func main() {
|
||||
app := iris.New()
|
||||
|
||||
app.Controller("/helloworld", new(HelloWorldController))
|
||||
|
||||
app.Run(iris.Addr("localhost:8080"))
|
||||
}
|
||||
|
||||
type HelloWorldController struct {
|
||||
mvc.C
|
||||
|
||||
// [ Your fields here ]
|
||||
// Request lifecycle data
|
||||
// Models
|
||||
// Database
|
||||
// Global properties
|
||||
}
|
||||
|
||||
//
|
||||
// GET: /helloworld
|
||||
|
||||
func (c *HelloWorldController) Get() string {
|
||||
return "This is my default action..."
|
||||
}
|
||||
|
||||
//
|
||||
// GET: /helloworld/{name:string}
|
||||
|
||||
func (c *HelloWorldController) GetBy(name string) string {
|
||||
return "Hello " + name
|
||||
}
|
||||
|
||||
//
|
||||
// GET: /helloworld/welcome
|
||||
|
||||
func (c *HelloWorldController) GetWelcome() (string, int) {
|
||||
return "This is the GetWelcome action func...", iris.StatusOK
|
||||
}
|
||||
|
||||
//
|
||||
// GET: /helloworld/welcome/{name:string}/{numTimes:int}
|
||||
|
||||
func (c *HelloWorldController) GetWelcomeBy(name string, numTimes int) {
|
||||
// Access to the low-level Context,
|
||||
// output arguments are optional of course so we don't have to use them here.
|
||||
c.Ctx.Writef("Hello %s, NumTimes is: %d", name, numTimes)
|
||||
}
|
||||
|
||||
```
|
||||
> [_examples/mvc](_examples/mvc) 和 [mvc/controller_test.go](https://github.com/kataras/iris/blob/master/mvc/controller_test.go) 两个简单的例子可以让你更好的了解 Iris MVC 的使用方式
|
||||
|
||||
每一个在controller中导出的Go方法名都和HTTP方法(`Get`, `Post`, `Put`, `Delete`...) 一一对应
|
||||
|
||||
在Web应用中一个HTTP访问的资源就是一个URL(统一资源定位符),比如`http://localhost:8080/helloworld`是由HTTP协议、Web服务网络位置(包括TCP端口):`localhost:8080`以及资源名称URI(统一资源标志符) `/helloworld`组成的。
|
||||
|
||||
上面例子第一个方法映射到[HTTP GET](https://www.w3schools.com/tags/ref_httpmethods.asp)方法,访问资源是"/helloworld",第三个方法映射到[HTTP GET](https://www.w3schools.com/tags/ref_httpmethods.asp)方法,访问资源是"/helloworld/welcome"
|
||||
|
||||
|
||||
Controller在处理`GetBy`方法时可以识别路径‘name’参数,`GetWelcomeBy`方法可以识别路径‘name’和‘numTimes’参数,因为Controller在识别`By`关键字后可以动态灵活的处理路由;上面第四个方法指示使用 [HTTP GET](https://www.w3schools.com/tags/ref_httpmethods.asp)方法,而且只处理以"/helloworld/welcome"开头的资源位置路径,并且此路径还得包括两部分,第一部分类型没有限制,第二部分只能是数字类型,比如"http://localhost:8080/helloworld/welcome/golang/32719" 是合法的,其它的就会给客户端返回[404 找不到](https://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html#sec10.4.5)的提示
|
||||
|
||||
|
||||
### MVC 快速指南 2
|
||||
|
||||
Iris对MVC的支持非常**棒[看看基准测试](_benchmarks)** ,Iris通过方法的返回值,可以给客户端返回任意类型的数据:
|
||||
|
||||
* 如果返回的是 `string` 类型,就直接给客户端返回字符串
|
||||
* 如果第二个返回值是 `string` 类型,那么这个值就是ContentType(HTTP header)的值
|
||||
* 如果返回的是 `int` 类型,这个值就是HTTP状态码
|
||||
* 如果返回 `error` 值不是空,Iris 将会把这个值作为HTTP 400页面的返回值内容
|
||||
* 如果返回 `(int, error)` 类型,并且error不为空,那么Iris返回error的内容,同时把 `int` 值作为HTTP状态码
|
||||
* 如果返回 `bool` 类型,并且值是 false ,Iris直接返回404页面
|
||||
* 如果返回自定义` struct` 、 `interface{}` 、 `slice` 及 `map` ,Iris 将按照JSON的方式返回,注意如果第二个返回值是 `string`,那么Iris就按照这个 `string` 值的ContentType处理了(不一定是'application/json')
|
||||
* 如果 `mvc.Result` 调用了 `Dispatch` 函数, 就会按照自己的逻辑重新处理
|
||||
|
||||
下面这些例子仅供参考,生产环境谨慎使用
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/kataras/iris"
|
||||
"github.com/kataras/iris/middleware/basicauth"
|
||||
"github.com/kataras/iris/mvc"
|
||||
)
|
||||
|
||||
// Movie 是自定义数据结构
|
||||
type Movie struct {
|
||||
Name string `json:"name"`
|
||||
Year int `json:"year"`
|
||||
Genre string `json:"genre"`
|
||||
Poster string `json:"poster"`
|
||||
}
|
||||
|
||||
// movies 对象模拟数据源
|
||||
var movies = []Movie{
|
||||
{
|
||||
Name: "Casablanca",
|
||||
Year: 1942,
|
||||
Genre: "Romance",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/1.jpg",
|
||||
},
|
||||
{
|
||||
Name: "Gone with the Wind",
|
||||
Year: 1939,
|
||||
Genre: "Romance",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/2.jpg",
|
||||
},
|
||||
{
|
||||
Name: "Citizen Kane",
|
||||
Year: 1941,
|
||||
Genre: "Mystery",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/3.jpg",
|
||||
},
|
||||
{
|
||||
Name: "The Wizard of Oz",
|
||||
Year: 1939,
|
||||
Genre: "Fantasy",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/4.jpg",
|
||||
},
|
||||
}
|
||||
|
||||
|
||||
var basicAuth = basicauth.New(basicauth.Config{
|
||||
Users: map[string]string{
|
||||
"admin": "password",
|
||||
},
|
||||
})
|
||||
|
||||
|
||||
func main() {
|
||||
app := iris.New()
|
||||
|
||||
app.Use(basicAuth)
|
||||
|
||||
app.Controller("/movies", new(MoviesController))
|
||||
|
||||
app.Run(iris.Addr(":8080"))
|
||||
}
|
||||
|
||||
// MoviesController 是 /movies controller.
|
||||
type MoviesController struct {
|
||||
mvc.C
|
||||
}
|
||||
|
||||
// 返回 movies列表
|
||||
// 例子:
|
||||
// curl -i http://localhost:8080/movies
|
||||
func (c *MoviesController) Get() []Movie {
|
||||
return movies
|
||||
}
|
||||
|
||||
// GetBy 返回一个 movie
|
||||
// 例子:
|
||||
// curl -i http://localhost:8080/movies/1
|
||||
func (c *MoviesController) GetBy(id int) Movie {
|
||||
return movies[id]
|
||||
}
|
||||
|
||||
// PutBy 更新一个 movie
|
||||
// 例子:
|
||||
// curl -i -X PUT -F "genre=Thriller" -F "poster=@/Users/kataras/Downloads/out.gif" http://localhost:8080/movies/1
|
||||
func (c *MoviesController) PutBy(id int) Movie {
|
||||
// 获取一个 movie
|
||||
m := movies[id]
|
||||
|
||||
// 获取一个poster文件
|
||||
file, info, err := c.Ctx.FormFile("poster")
|
||||
if err != nil {
|
||||
c.Ctx.StatusCode(iris.StatusInternalServerError)
|
||||
return Movie{}
|
||||
}
|
||||
file.Close() // 我们不需要这个文件
|
||||
poster := info.Filename // 比如这就是上传的文件url
|
||||
genre := c.Ctx.FormValue("genre")
|
||||
|
||||
// 更新poster
|
||||
m.Poster = poster
|
||||
m.Genre = genre
|
||||
movies[id] = m
|
||||
|
||||
return m
|
||||
}
|
||||
|
||||
// DeleteBy 删除一个 movie
|
||||
// 例子:
|
||||
// curl -i -X DELETE -u admin:password http://localhost:8080/movies/1
|
||||
func (c *MoviesController) DeleteBy(id int) iris.Map {
|
||||
//从movies slice中删除索引
|
||||
deleted := movies[id].Name
|
||||
movies = append(movies[:id], movies[id+1:]...)
|
||||
// 返回删除movie的名称
|
||||
return iris.Map{"deleted": deleted}
|
||||
}
|
||||
```
|
||||
|
||||
### MVC 快速指南 3
|
||||
|
||||
Iris是一个底层的Web开发框架,如果你喜欢按 **目录结构** 的约定方式开发,那么Iris框架对此毫无影响。
|
||||
|
||||
你可以根据自己的需求来创建目录结构,但是我建议你还是最好看看如下的目录结构例子:
|
||||
|
||||
[](_examples/mvc/overview)
|
||||
|
||||
好了,直接上代码。
|
||||
|
||||
|
||||
#### 数据模型层
|
||||
|
||||
```go
|
||||
// file: datamodels/movie.go
|
||||
|
||||
package datamodels
|
||||
|
||||
// Movie是我们例子数据结构
|
||||
// 此Movie可能会定义在类似"web/viewmodels/movie.go"的文件
|
||||
// Movie的数据模型在应用中只有一个,这样使用就很简单了
|
||||
type Movie struct {
|
||||
ID int64 `json:"id"`
|
||||
Name string `json:"name"`
|
||||
Year int `json:"year"`
|
||||
Genre string `json:"genre"`
|
||||
Poster string `json:"poster"`
|
||||
}
|
||||
```
|
||||
|
||||
#### 数据层 / 数据存储层
|
||||
|
||||
```go
|
||||
// file: datasource/movies.go
|
||||
|
||||
package datasource
|
||||
|
||||
import "github.com/kataras/iris/_examples/mvc/overview/datamodels"
|
||||
|
||||
// Movies是模拟的数据源
|
||||
var Movies = map[int64]datamodels.Movie{
|
||||
1: {
|
||||
ID: 1,
|
||||
Name: "Casablanca",
|
||||
Year: 1942,
|
||||
Genre: "Romance",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/1.jpg",
|
||||
},
|
||||
2: {
|
||||
ID: 2,
|
||||
Name: "Gone with the Wind",
|
||||
Year: 1939,
|
||||
Genre: "Romance",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/2.jpg",
|
||||
},
|
||||
3: {
|
||||
ID: 3,
|
||||
Name: "Citizen Kane",
|
||||
Year: 1941,
|
||||
Genre: "Mystery",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/3.jpg",
|
||||
},
|
||||
4: {
|
||||
ID: 4,
|
||||
Name: "The Wizard of Oz",
|
||||
Year: 1939,
|
||||
Genre: "Fantasy",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/4.jpg",
|
||||
},
|
||||
5: {
|
||||
ID: 5,
|
||||
Name: "North by Northwest",
|
||||
Year: 1959,
|
||||
Genre: "Thriller",
|
||||
Poster: "https://iris-go.com/images/examples/mvc-movies/5.jpg",
|
||||
},
|
||||
}
|
||||
```
|
||||
|
||||
#### 数据仓库
|
||||
|
||||
数据仓库层直接访问数据源
|
||||
|
||||
```go
|
||||
// file: repositories/movie_repository.go
|
||||
|
||||
package repositories
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"sync"
|
||||
|
||||
"github.com/kataras/iris/_examples/mvc/overview/datamodels"
|
||||
)
|
||||
|
||||
// Query 是数据访问的集合入口
|
||||
type Query func(datamodels.Movie) bool
|
||||
|
||||
// MovieRepository 中会有对movie实体的基本操作
|
||||
type MovieRepository interface {
|
||||
Exec(query Query, action Query, limit int, mode int) (ok bool)
|
||||
|
||||
Select(query Query) (movie datamodels.Movie, found bool)
|
||||
SelectMany(query Query, limit int) (results []datamodels.Movie)
|
||||
|
||||
InsertOrUpdate(movie datamodels.Movie) (updatedMovie datamodels.Movie, err error)
|
||||
Delete(query Query, limit int) (deleted bool)
|
||||
}
|
||||
|
||||
// NewMovieRepository 返回movie内存数据
|
||||
func NewMovieRepository(source map[int64]datamodels.Movie) MovieRepository {
|
||||
return &movieMemoryRepository{source: source}
|
||||
}
|
||||
|
||||
// movieMemoryRepository 就是 "MovieRepository",它管理movie的内存数据
|
||||
type movieMemoryRepository struct {
|
||||
source map[int64]datamodels.Movie
|
||||
mu sync.RWMutex
|
||||
}
|
||||
|
||||
const (
|
||||
// 只读模式
|
||||
ReadOnlyMode = iota
|
||||
// 读写模式
|
||||
ReadWriteMode
|
||||
)
|
||||
|
||||
func (r *movieMemoryRepository) Exec(query Query, action Query, actionLimit int, mode int) (ok bool) {
|
||||
loops := 0
|
||||
|
||||
if mode == ReadOnlyMode {
|
||||
r.mu.RLock()
|
||||
defer r.mu.RUnlock()
|
||||
} else {
|
||||
r.mu.Lock()
|
||||
defer r.mu.Unlock()
|
||||
}
|
||||
|
||||
for _, movie := range r.source {
|
||||
ok = query(movie)
|
||||
if ok {
|
||||
if action(movie) {
|
||||
loops++
|
||||
if actionLimit >= loops {
|
||||
break // break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// Select方法返回从模拟数据源找出的一个movie数据。
|
||||
// 当找到时就返回true,并停止迭代
|
||||
//
|
||||
// Select 将会返回查询到的最新找到的movie数据,这样可以减少代码量
|
||||
//
|
||||
// 自从我第一次想到用这种简单的原型函数后,我就经常用它了,希望这也对你有用
|
||||
func (r *movieMemoryRepository) Select(query Query) (movie datamodels.Movie, found bool) {
|
||||
found = r.Exec(query, func(m datamodels.Movie) bool {
|
||||
movie = m
|
||||
return true
|
||||
}, 1, ReadOnlyMode)
|
||||
|
||||
// 如果没有找到就让datamodels.Movie为空
|
||||
// set an empty datamodels.Movie if not found at all.
|
||||
if !found {
|
||||
movie = datamodels.Movie{}
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// 如果要查找很多值,用法基本一致,不过会返回datamodels.Movie slice。
|
||||
// 如果limit<=0,将返回全部数据
|
||||
func (r *movieMemoryRepository) SelectMany(query Query, limit int) (results []datamodels.Movie) {
|
||||
r.Exec(query, func(m datamodels.Movie) bool {
|
||||
results = append(results, m)
|
||||
return true
|
||||
}, limit, ReadOnlyMode)
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
// 插入或更新数据
|
||||
//
|
||||
// 返回一个新的movie对象和error对象
|
||||
func (r *movieMemoryRepository) InsertOrUpdate(movie datamodels.Movie) (datamodels.Movie, error) {
|
||||
id := movie.ID
|
||||
|
||||
if id == 0 { // Create new action
|
||||
var lastID int64
|
||||
// 为了数据不重复,找到最大的ID。
|
||||
// 生产环境你可以用第三方库生成一个UUID字串
|
||||
r.mu.RLock()
|
||||
for _, item := range r.source {
|
||||
if item.ID > lastID {
|
||||
lastID = item.ID
|
||||
}
|
||||
}
|
||||
r.mu.RUnlock()
|
||||
|
||||
id = lastID + 1
|
||||
movie.ID = id
|
||||
|
||||
// map-specific thing
|
||||
r.mu.Lock()
|
||||
r.source[id] = movie
|
||||
r.mu.Unlock()
|
||||
|
||||
return movie, nil
|
||||
}
|
||||
//通过movie.ID更新数据
|
||||
//这里举个例子看如果更新非空的poster和genre
|
||||
//其实我们可以直接更新对象r.source[id] = movie
|
||||
//用Select的话如下所示
|
||||
current, exists := r.Select(func(m datamodels.Movie) bool {
|
||||
return m.ID == id
|
||||
})
|
||||
|
||||
if !exists { // ID不存在,返回error ID
|
||||
return datamodels.Movie{}, errors.New("failed to update a nonexistent movie")
|
||||
}
|
||||
|
||||
// 或者直接对象操作替换
|
||||
// or comment these and r.source[id] = m for pure replace
|
||||
if movie.Poster != "" {
|
||||
current.Poster = movie.Poster
|
||||
}
|
||||
|
||||
if movie.Genre != "" {
|
||||
current.Genre = movie.Genre
|
||||
}
|
||||
|
||||
// 类map结构的处理
|
||||
r.mu.Lock()
|
||||
r.source[id] = current
|
||||
r.mu.Unlock()
|
||||
|
||||
return movie, nil
|
||||
}
|
||||
|
||||
func (r *movieMemoryRepository) Delete(query Query, limit int) bool {
|
||||
return r.Exec(query, func(m datamodels.Movie) bool {
|
||||
delete(r.source, m.ID)
|
||||
return true
|
||||
}, limit, ReadWriteMode)
|
||||
}
|
||||
```
|
||||
|
||||
#### 服务层
|
||||
|
||||
服务层主要调用“数据仓库”和“数据模型”的方法(即使是数据模型很简单的应用)。这一层将包含主要的数据处理逻辑。
|
||||
|
||||
|
||||
```go
|
||||
// file: services/movie_service.go
|
||||
|
||||
package services
|
||||
|
||||
import (
|
||||
"github.com/kataras/iris/_examples/mvc/overview/datamodels"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/repositories"
|
||||
)
|
||||
|
||||
// MovieService主要包括对movie的CRUID(增删改查)操作。
|
||||
// MovieService主要调用movie 数据仓库的方法。
|
||||
// 下面例子的数据源是更高级别的组件
|
||||
// 这样可以用同样的逻辑可以返回不同的数据仓库
|
||||
// MovieService是一个接口,任何实现的地方都能用,这样可以替换不同的业务逻辑用来测试
|
||||
type MovieService interface {
|
||||
GetAll() []datamodels.Movie
|
||||
GetByID(id int64) (datamodels.Movie, bool)
|
||||
DeleteByID(id int64) bool
|
||||
UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error)
|
||||
}
|
||||
|
||||
// NewMovieService 返回一个 movie 服务.
|
||||
func NewMovieService(repo repositories.MovieRepository) MovieService {
|
||||
return &movieService{
|
||||
repo: repo,
|
||||
}
|
||||
}
|
||||
|
||||
type movieService struct {
|
||||
repo repositories.MovieRepository
|
||||
}
|
||||
|
||||
// GetAll 返回所有 movies.
|
||||
func (s *movieService) GetAll() []datamodels.Movie {
|
||||
return s.repo.SelectMany(func(_ datamodels.Movie) bool {
|
||||
return true
|
||||
}, -1)
|
||||
}
|
||||
|
||||
// GetByID 是通过id找到movie.
|
||||
func (s *movieService) GetByID(id int64) (datamodels.Movie, bool) {
|
||||
return s.repo.Select(func(m datamodels.Movie) bool {
|
||||
return m.ID == id
|
||||
})
|
||||
}
|
||||
|
||||
|
||||
// UpdatePosterAndGenreByID 更新一个 movie的 poster 和 genre.
|
||||
func (s *movieService) UpdatePosterAndGenreByID(id int64, poster string, genre string) (datamodels.Movie, error) {
|
||||
// update the movie and return it.
|
||||
return s.repo.InsertOrUpdate(datamodels.Movie{
|
||||
ID: id,
|
||||
Poster: poster,
|
||||
Genre: genre,
|
||||
})
|
||||
}
|
||||
|
||||
// DeleteByID 通过id删除一个movie
|
||||
//
|
||||
// 返回true表示成功,其它都是失败
|
||||
func (s *movieService) DeleteByID(id int64) bool {
|
||||
return s.repo.Delete(func(m datamodels.Movie) bool {
|
||||
return m.ID == id
|
||||
}, 1)
|
||||
}
|
||||
```
|
||||
|
||||
#### 视图模型
|
||||
|
||||
视图模型将处理结果返回给客户端
|
||||
|
||||
例子:
|
||||
Example:
|
||||
|
||||
```go
|
||||
import (
|
||||
"github.com/kataras/iris/_examples/mvc/overview/datamodels"
|
||||
|
||||
"github.com/kataras/iris/context"
|
||||
)
|
||||
|
||||
type Movie struct {
|
||||
datamodels.Movie
|
||||
}
|
||||
|
||||
func (m Movie) IsValid() bool {
|
||||
/* 做一些检测,如果ID合法就返回true */
|
||||
return m.ID > 0
|
||||
}
|
||||
```
|
||||
|
||||
Iris允许在HTTP Response Dispatcher中使用任何自定义数据结构,
|
||||
所以理论上来说,除非万不得已,下面的代码不建议使用
|
||||
|
||||
```go
|
||||
// Dispatch实现了`kataras/iris/mvc#Result`接口。在函数最后发送了一个`Movie`对象作为http response对象。
|
||||
// 如果ID小于等于0就回返回404,或者就返回json数据。
|
||||
//(这样就像控制器的方法默认返回自定义类型一样)
|
||||
//
|
||||
// 不要在这里写过多的代码,应用的主要逻辑不在这里
|
||||
// 在方法返回之前可以做个简单验证处理等等;
|
||||
//
|
||||
// 这里只是一个小例子,想想这个优势在设计大型应用是很有作用的
|
||||
//
|
||||
// 这个方法是在`Movie`类型的控制器调用的。
|
||||
// 例子在这里:`controllers/movie_controller.go#GetBy`。
|
||||
func (m Movie) Dispatch(ctx context.Context) {
|
||||
if !m.IsValid() {
|
||||
ctx.NotFound()
|
||||
return
|
||||
}
|
||||
ctx.JSON(m, context.JSON{Indent: " "})
|
||||
}
|
||||
```
|
||||
然而,我们仅仅用"datamodels"作为一个数据模型包,是因为Movie数据结构没有包含敏感数据,客户端可以访问到其所有字段,我们不需要再有额外的功能去做验证处理了
|
||||
|
||||
|
||||
#### 控制器
|
||||
|
||||
控制器处理Web请求,它是服务层和客户端之间的桥梁
|
||||
|
||||
```go
|
||||
// file: web/controllers/movie_controller.go
|
||||
|
||||
package controllers
|
||||
|
||||
import (
|
||||
"errors"
|
||||
|
||||
"github.com/kataras/iris/_examples/mvc/overview/datamodels"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/services"
|
||||
|
||||
"github.com/kataras/iris"
|
||||
"github.com/kataras/iris/mvc"
|
||||
)
|
||||
|
||||
// MovieController是/movies的控制器
|
||||
type MovieController struct {
|
||||
mvc.C
|
||||
|
||||
// MovieService是一个接口,主app对象会持有它
|
||||
Service services.MovieService
|
||||
}
|
||||
|
||||
// 获取movies列表
|
||||
// 例子:
|
||||
// curl -i http://localhost:8080/movies
|
||||
//
|
||||
// 如果你有一些敏感的数据要处理的话,可以按照如下所示的方式:
|
||||
// func (c *MovieController) Get() (results []viewmodels.Movie) {
|
||||
// data := c.Service.GetAll()
|
||||
//
|
||||
// for _, movie := range data {
|
||||
// results = append(results, viewmodels.Movie{movie})
|
||||
// }
|
||||
// return
|
||||
// }
|
||||
//否则直接返回数据模型
|
||||
func (c *MovieController) Get() (results []datamodels.Movie) {
|
||||
return c.Service.GetAll()
|
||||
}
|
||||
|
||||
// GetBy返回一个movie对象
|
||||
// 例子:
|
||||
// curl -i http://localhost:8080/movies/1
|
||||
func (c *MovieController) GetBy(id int64) (movie datamodels.Movie, found bool) {
|
||||
return c.Service.GetByID(id) // 404 没有找到
|
||||
}
|
||||
|
||||
// PutBy更新一个movie.
|
||||
// 例子:
|
||||
// curl -i -X PUT -F "genre=Thriller" -F "poster=@/Users/kataras/Downloads/out.gif" http://localhost:8080/movies/1
|
||||
func (c *MovieController) PutBy(id int64) (datamodels.Movie, error) {
|
||||
// 从请求中获取poster和genre
|
||||
file, info, err := c.Ctx.FormFile("poster")
|
||||
if err != nil {
|
||||
return datamodels.Movie{}, errors.New("failed due form file 'poster' missing")
|
||||
}
|
||||
// 关闭文件
|
||||
file.Close()
|
||||
|
||||
//想象这就是一个上传文件的url
|
||||
poster := info.Filename
|
||||
genre := c.Ctx.FormValue("genre")
|
||||
|
||||
return c.Service.UpdatePosterAndGenreByID(id, poster, genre)
|
||||
}
|
||||
|
||||
// DeleteBy删除一个movie对象
|
||||
// 例子:
|
||||
// curl -i -X DELETE -u admin:password http://localhost:8080/movies/1
|
||||
func (c *MovieController) DeleteBy(id int64) interface{} {
|
||||
wasDel := c.Service.DeleteByID(id)
|
||||
if wasDel {
|
||||
// 返回要删除的ID
|
||||
return iris.Map{"deleted": id}
|
||||
}
|
||||
//现在我们可以看到这里可以返回一个有2个返回值(map或int)的函数
|
||||
//我们并没有指定一个返回的类型
|
||||
return iris.StatusBadRequest
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
// file: web/controllers/hello_controller.go
|
||||
|
||||
package controllers
|
||||
|
||||
import (
|
||||
"errors"
|
||||
|
||||
"github.com/kataras/iris/mvc"
|
||||
)
|
||||
|
||||
// HelloController是控制器的例子
|
||||
// 下面会处理GET: /hello and GET: /hello/{name}
|
||||
type HelloController struct {
|
||||
mvc.C
|
||||
}
|
||||
|
||||
var helloView = mvc.View{
|
||||
Name: "hello/index.html",
|
||||
Data: map[string]interface{}{
|
||||
"Title": "Hello Page",
|
||||
"MyMessage": "Welcome to my awesome website",
|
||||
},
|
||||
}
|
||||
|
||||
// Get会返回预定义绑定数据的视图
|
||||
//
|
||||
// `mvc.Result`是一个含有`Dispatch`方法的接口
|
||||
// `mvc.Response` 和 `mvc.View` dispatchers 内置类型
|
||||
// 你也可以通过实现`github.com/kataras/iris/mvc#Result`接口来自定义dispatchers
|
||||
func (c *HelloController) Get() mvc.Result {
|
||||
return helloView
|
||||
}
|
||||
|
||||
// 你可以定义一个标准通用的error
|
||||
var errBadName = errors.New("bad name")
|
||||
|
||||
//你也可以将error包裹在mvc.Response中,这样就和mvc.Result类型兼容了
|
||||
var badName = mvc.Response{Err: errBadName, Code: 400}
|
||||
|
||||
// GetBy 返回 "Hello {name}" response
|
||||
// 例子:
|
||||
// curl -i http://localhost:8080/hello/iris
|
||||
// curl -i http://localhost:8080/hello/anything
|
||||
func (c *HelloController) GetBy(name string) mvc.Result {
|
||||
if name != "iris" {
|
||||
return badName
|
||||
// 或者
|
||||
// GetBy(name string) (mvc.Result, error) {
|
||||
// return nil, errBadName
|
||||
// }
|
||||
}
|
||||
|
||||
// 返回 mvc.Response{Text: "Hello " + name} 或者:
|
||||
return mvc.View{
|
||||
Name: "hello/name.html",
|
||||
Data: name,
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
```go
|
||||
// file: web/middleware/basicauth.go
|
||||
|
||||
package middleware
|
||||
|
||||
import "github.com/kataras/iris/middleware/basicauth"
|
||||
|
||||
// BasicAuth 中间件例
|
||||
var BasicAuth = basicauth.New(basicauth.Config{
|
||||
Users: map[string]string{
|
||||
"admin": "password",
|
||||
},
|
||||
})
|
||||
```
|
||||
|
||||
```html
|
||||
<!-- file: web/views/hello/index.html -->
|
||||
<html>
|
||||
|
||||
<head>
|
||||
<title>{{.Title}} - My App</title>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<p>{{.MyMessage}}</p>
|
||||
</body>
|
||||
|
||||
</html>
|
||||
```
|
||||
|
||||
```html
|
||||
<!-- file: web/views/hello/name.html -->
|
||||
<html>
|
||||
|
||||
<head>
|
||||
<title>{{.}}' Portfolio - My App</title>
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<h1>Hello {{.}}</h1>
|
||||
</body>
|
||||
|
||||
</html>
|
||||
```
|
||||
|
||||
> 戳[_examples/view](_examples/#view) 可以找到更多关于layouts,tmpl,routing的例子
|
||||
|
||||
|
||||
#### 程序入口
|
||||
|
||||
程序入口可以将任何组件包含进来
|
||||
|
||||
```go
|
||||
// file: main.go
|
||||
|
||||
package main
|
||||
|
||||
import (
|
||||
"github.com/kataras/iris/_examples/mvc/overview/datasource"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/repositories"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/services"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/web/controllers"
|
||||
"github.com/kataras/iris/_examples/mvc/overview/web/middleware"
|
||||
|
||||
"github.com/kataras/iris"
|
||||
)
|
||||
|
||||
func main() {
|
||||
app := iris.New()
|
||||
|
||||
// 加载模板文件
|
||||
app.RegisterView(iris.HTML("./web/views", ".html"))
|
||||
|
||||
// 注册控制器
|
||||
app.Controller("/hello", new(controllers.HelloController))
|
||||
|
||||
// 创建movie 数据仓库,次仓库包含的是内存级的数据源
|
||||
repo := repositories.NewMovieRepository(datasource.Movies)
|
||||
// 创建movie服务, 然后将其与控制器绑定
|
||||
movieService := services.NewMovieService(repo)
|
||||
|
||||
app.Controller("/movies", new(controllers.MovieController),
|
||||
// 将"movieService"绑定在 MovieController的Service接口
|
||||
movieService,
|
||||
// 为/movies请求添加basic authentication(admin:password)中间件
|
||||
middleware.BasicAuth)
|
||||
|
||||
// 启动应用localhost:8080
|
||||
// http://localhost:8080/hello
|
||||
// http://localhost:8080/hello/iris
|
||||
// http://localhost:8080/movies
|
||||
// http://localhost:8080/movies/1
|
||||
app.Run(
|
||||
iris.Addr("localhost:8080"),
|
||||
iris.WithoutVersionChecker,
|
||||
iris.WithoutServerError(iris.ErrServerClosed),
|
||||
iris.WithOptimizations, // 可以启用快速json序列化等优化配置
|
||||
)
|
||||
}
|
||||
```
|
||||
|
||||
更多指南戳 [_examples/#structuring](_examples/#structuring)
|
||||
|
||||
## 现在你已经准备好进入下一阶段,又向专家级gopher迈进一步了
|
||||
|
||||
|
||||
Reference in New Issue
Block a user