目录

1.文件结构2.实验效果3.主文件：main.py4.base.html文件5.update.html文件6.delete.html文件7.search.html文件

1.文件结构

MySQLdb和pymysql的使用差不多阅读的小伙伴可以自己尝试实现

2.实验效果

3.主文件：main.py

import MySQLdb
from flask_wtf import FlaskForm
from wtforms.validators import DataRequired,EqualTo,Length
from wtforms import StringField,SubmitField,PasswordField,TelField
from flask import Flask,render_template,redirect,url_for,abort,request,jsonify

app=Flask(__name__)
app.secret_key="stu"

#连接数据mysql
conn=MySQLdb.connect(
    host="127.0.0.1",
    port=3306,
    user="root",
    password="root",
    db="main"
)
cur=conn.cursor()

#增加用户表单
class StuForm(FlaskForm):
    name=StringField(label="用户名: ",validators=[DataRequired()])
    password=PasswordField(label="密码: ",validators=[DataRequired(),Length(min=3,max=8)])
    submit=SubmitField(label="提交")

#搜索用户表单
class SStuForm(FlaskForm):
    name = StringField(label="用户名: ", validators=[DataRequired()])
    submit=SubmitField(label="提交")

#更新用户表单
class UStuForm(FlaskForm):
    name = StringField(label="用户名: ", validators=[DataRequired()])
    password = PasswordField(label="密码: ", validators=[DataRequired(), Length(min=3, max=8)])
    submit = SubmitField(label="提交")

#删除用户表单
class DStuForm(FlaskForm):
    name = StringField(label="用户名: ", validators=[DataRequired()])
    submit = SubmitField(label="提交")

def CreateTab():
    sql="create table student(name varchar(20),password varchar(30))"
    cur.execute(sql)
    conn.commit()
    cur.close()

@app.route("/add",methods=["POST","GET"])
def add():
    stuform=StuForm()
    if request.method=="POST":
        if stuform.validate_on_submit():
            name=stuform.name.data
            password=stuform.password.data
            print("name: {}".format(name))
            print("password: {}".format(password))
            sql=f"insert into student(name,password) values("{name}","{password}")"
            cur.execute(sql)
            conn.commit()
            return jsonify("Add Successed!")
    return render_template("add.html",stuform=stuform)

@app.route("/search",methods=["POST","GET"])
def search():
    sstuform=SStuForm()
    if request.method=="POST":
        if sstuform.validate_on_submit():
            name=sstuform.name.data
            sql=f"select count(name) from student where name="{name}""
            cur.execute(sql)
            conn.commit()
            count=cur.fetchone()[0]
            if count<=0:
                return jsonify("The User is not exist!")
            else:
                sql=f"select name,password from student where name="{name}""
                cur.execute(sql)
                conn.commit()
                result=cur.fetchall()
                return jsonify(result)
    return render_template("search.html",sstuform=sstuform)

@app.route("/update",methods=["POST","GET"])
def update():
    ustuform=UStuForm()
    if request.method=="POST":
        if ustuform.validate_on_submit():
            name = ustuform.name.data
            password=ustuform.password.data
            sql = f"select count(name) from student where name="{name}""
            cur.execute(sql)
            conn.commit()
            count = cur.fetchone()[0]
            if count <= 0:
                return jsonify("The User is not exist!")
            else:
                sql = f"update student set name="{name}",password="{password}"  where name="{name}""
                cur.execute(sql)
                conn.commit()
                return jsonify("Update Successed!")
    return render_template("update.html",ustuform=ustuform)
@app.route("/delete",methods=["POST","GET"])
def delete():
    dstuform=DStuForm()
    if request.method=="POST":
        if dstuform.validate_on_submit():
            name=dstuform.name.data
            sql = f"select count(name) from student where name="{name}""
            cur.execute(sql)
            conn.commit()
            count = cur.fetchone()[0]
            if count <= 0:
                return jsonify("The User is not exist!")
            else:
                sql=f"delete from student where name="{name}""
                cur.execute(sql)
                conn.commit()
                return jsonify("Delete Successed!")

    return render_template("delete.html",dstuform=dstuform)

@app.route("/function",methods=["POST","GET"])
def function():
    if request.method=="POST":
        submit1 = request.form.get("submit1")
        submit2 = request.form.get("submit2")
        submit3 = request.form.get("submit3")
        submit4 = request.form.get("submit4")
        print("submit1: {}".format(submit1))
        print("submit2: {}".format(submit2))
        print("submit3: {}".format(submit3))
        print("submit4: {}".format(submit4))
        if submit1 is not None:
            return redirect(url_for("add"))
        if submit2 is not None:
            return redirect(url_for("search"))
        if submit3 is not None:
            return redirect(url_for("update"))
        if submit4 is not None:
            return redirect(url_for("delete"))
    return render_template("base.html")
if __name__ == "__main__":
    print("Pycharm")
    # CreateTab()
    app.run(debug=True)

4.base.html文件

    
    
    


    

        
功能选择
    
    

        

            
        
        

            
        
        

            
        
        

            
        
    

5.update.html文件

    
    
    


  

      

          {{ustuform.csrf_token()}}
          {{ustuform.name.label}}{{ustuform.name}}

          {{ustuform.password.label}}{{ustuform.password}}

          
      
  

6.delete.html文件

    
    
    


  

      

          {{dstuform.csrf_token()}}
          {{dstuform.name.label}}{{dstuform.name}}

          
      
  

7.search.html文件

    
    
    


  

      

          {{sstuform.csrf_token()}}
          {{sstuform.name.label}}{{sstuform.name}}

          
      
  

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