ASP. NET CORE Study11

Simple personal blog project construction notes

1. summary

Project outline

By making a simple , Easy to understand personal blog project , It is very simple to add, delete, modify and check , To learn better asp.net core, This project uses asp.net core webapi+elementui To do it .

2. Database design

Article table

ID
 Article title 
 Article content 
 Creation time 
 Type of article ID
 Browse volume 
 Like 
 author ID

Article type table

ID
 Type name 

Author's list

ID
 full name 
 account number 
 password  MD5

3. Architecture design

Storage layer

Service layer

MD5 encryption

public static string MD5Encrypt32(string password)
{
    
    string pwd = "";
    MD5 md5 = MD5.Create(); // Instantiate a md5 Antithetic image 
    byte[] s = md5.ComputeHash(Encoding.UTF8.GetBytes(password));
    for (int i = 0; i < s.Length; i++)
    {
    
        pwd = pwd + s[i].ToString("X");
    }
    return pwd;
}

JWT Use

JWT to grant authorization

1. Add one webapi project

2. install Nuget Package System.IdentityModel.Tokens.Jwt

var claims = new Claim[]
            {
    
                new Claim(ClaimTypes.Name, " Zhang San ")
            };
var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("SDMC-CJAS1-SAD-DFSFA-SADHJVF-VF"));
//issuer On behalf of Token Of Web Applications ,audience yes Token Accepted by 
var token = new JwtSecurityToken(
    issuer: "http://localhost:6060",
    audience: "http://localhost:5000",
    claims: claims,
    notBefore: DateTime.Now,
    expires: DateTime.Now.AddHours(1),
    signingCredentials: new SigningCredentials(key, SecurityAlgorithms.HmacSha256)
);
var jwtToken = new JwtSecurityTokenHandler().WriteToken(token);
return jwtToken;

JWT authentication

install Microsoft.AspNetCore.Authentication.JwtBearer

services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
            .AddJwtBearer(options =>
            {
    
              options.TokenValidationParameters = new TokenValidationParameters
              {
    
                ValidateIssuerSigningKey = true,
                IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes("SDMC-CJAS1-SAD-DFSFA-SADHJVF-VF")),
                ValidateIssuer = true,
                ValidIssuer = "http://localhost:6060",
                ValidateAudience = true,
                ValidAudience = "http://localhost:5000",
                ValidateLifetime = true,
                ClockSkew = TimeSpan.FromMinutes(60)
              };
            });

JWT Authorized authentication use

Swagger If you want to use authentication, you need to register the service, add the following code

c.AddSecurityDefinition("Bearer", new OpenApiSecurityScheme
        {
    
          In=ParameterLocation.Header,
          Type=SecuritySchemeType.ApiKey,
          Description= " Type... Directly in the box below Bearer {token}（ Notice that there is a space between the two ）",
          Name="Authorization",
          BearerFormat="JWT",
          Scheme="Bearer"
        });
        c.AddSecurityRequirement(new OpenApiSecurityRequirement
        {
    
          {
    
            new OpenApiSecurityScheme
            {
    
              Reference=new OpenApiReference
              {
    
                Type=ReferenceType.SecurityScheme,
                Id="Bearer"
              }
            },
            new string[] {
    }
          }
        });

AutoMapper

install Nuget AutoMapper.Extensions.Microsoft.DependencyInjection

Define a class , Inherit Profile

public class CustomAutoMapperProfile:Profile
  {
    
    public CustomAutoMapperProfile()
    {
    
      base.CreateMap<StudentEntity, StudentDto>();
    }
  }

Register in the service

services.AddAutoMapper(typeof(CustomAutoMapperProfile));

Constructor injection

private readonly IMapper _mapper;

    public StudentsController(IMapper mapper)
    {
    
      this._mapper = mapper;
    }

Complex mapping

base.CreateMap<Admin, AdminDto>()
        .ForMember(dest => dest.RoleMsg, sourse => sourse.MapFrom(src => src.RoleInfo.RoleMsg));

User:
UserPwd	-> Cannot return to the front end 
UserName -> Back to front end 
UserDTO:
UserName