web.py 真香

开始

如果你想为你的应用或网站搭建一个简易的后台，那么web.py是不错的选择。
life is short ,we need python！

URL POST GET

code

# Helloword.py
# coding:utf-8
# 导入web.py模块
import web

# 定义URL结构对应的处理类
urls = (
    '/hello', 'HelloHandler',
    '/word(.*)', 'WordHandler',
)
# 创建一个基于我们刚提交的URL列表的application
app = web.application(urls, globals())


# 创建处理类
# HelloHandler 和  WordHandler的区别就是  hello中的ulr无通配符，word是有通配符
class HelloHandler:
    def GET(self):
        return "this is a Hello Return"
class WordHandler:
    def GET(self, name):
        #通配符中匹配的文字，将作为name传入
        return "this is a Work Return" + name

# 启动上面我们写的应用
if __name__ == "__main__":
    app.run()

run

python Helloword.py 
或者指定端口号
python Helloword.py 2333 

test

在浏览器输入
http://0.0.0.0:8080/hello
或
http://0.0.0.0:8080/wordssss

CRUD增删改查

选用sqlite作为数据库,因为我只会这个orz

sqlite

sqlite3 User.db
CREATE TABLE t_user(id BIGINT PRIMARY KEY NOT NULL, name TEXT NOT NULL);

code

#coding:utf-8
import web
import json

urls = (
    '/user/(.*?)', 'UserHandler',
)

app = web.application(urls, globals())
db = web.database(dbn='sqlite',db='User.db')

class UserHandler:
    def GET(self, name):
        inputFrom = web.input();

        if name == "create":
            formName = inputFrom.get("name")
            userID = db.insert('t_user', name=formName)
            web.header('content-type', 'text/json')
            return json.dumps({'id': userID})

        elif name == "delete":
            formId = inputFrom.get("id")
            stWhere = "id=" + formId
            db.delete('t_user', where=stWhere)
            return "success"

        elif name == "update":
            formId = inputFrom.get("id")
            formName = inputFrom.get("name")

            stWhere = "id=" + formId
            db.update('t_user', where=stWhere, name=formName)

            return "update"


        elif name == "read":

            dbUsers = db.query('select * from t_user')
            jsonUsers = []

            for dbUser in dbUsers:
                jsonUser = {'id': dbUser.id, 'name': dbUser.name}
                jsonUsers.append(jsonUser)
            web.header('content-type', 'text/json')
            return json.dumps({'users': jsonUsers})

if __name__ == "__main__":
    app.run()

test

http://0.0.0.0:8080/user/create?name="u1"

http://0.0.0.0:8080/user/create?id=1&name="u11"

http://0.0.0.0:8080/user/delete?id=1

http://0.0.0.0:8080/user/read

文件上传

code

# UploadFile.py
# coding:utf-8
import web

urls = (
    '/upload', 'UploadFileHandler',
)

app = web.application(urls, globals())


class UploadFileHandler:
    def POST(self):
        input = web.input(uploadFile={})
        # 保存文件
        filename = input.uploadFile.filename
        fout = open(filename, 'wb') # w:打开一个文件只用于写入 wb:以二进制格式打开一个文件只用于写入,一般用于非文本文件如图片等
        fout.write(input.uploadFile.file.read())
        fout.close()

        # 处理其他参数
        other = input.get("other")
        return "success"

if __name__ == "__main__":
    app.run()

test

//okHttp android
public void uplaodFile(final File file){
        try {
            RequestBody fileBody = RequestBody.create(MediaType.parse("application/octet-stream"),file);

            RequestBody requestBody = new MultipartBody.Builder()
                    .setType(MultipartBody.FORM)
                    .addFormDataPart("uploadFile", file.getName(), fileBody)
                    .addFormDataPart("other","dinosaur")
                    .build();

            Request request = new Request.Builder()
                    .url(ipAction.getUrl() + "/dinosaur/upload")
                    .post(requestBody)
                    .build();

            Call call = client.newCall(request);
            Response response = call.execute();
        }catch (Exception e){
            e.printStackTrace();
        }
    }