diff --git a/app/services/educoder/client_service.rb b/app/services/educoder/client_service.rb
new file mode 100644
index 000000000..6c5c10d99
--- /dev/null
+++ b/app/services/educoder/client_service.rb
@@ -0,0 +1,112 @@
+class Educoder::ClientService < ApplicationService
+  attr_reader :url, :params
+
+  PAGINATE_DEFAULT_PAGE  = 1
+  PAGINATE_DEFAULT_LIMIT = 20
+
+  def initialize(options={})
+    @url      = options[:url]
+    @params   = options[:params]
+  end
+
+  def post(url, params={})
+    puts "[educoder] request params: #{params}"
+    auth_token = authen_params(params[:token])
+    response = conn(auth_token).post do |req|
+      req.url full_url(url)
+      req.body = params[:data].to_json
+    end
+    render_status(response)
+  end
+
+  def get(url, params={})
+    puts "[educoder] params: #{params}"
+    conn(api_url(url), params)
+  end
+
+  def delete(url, params={})
+    auth_token = authen_params(params[:token])
+    conn(auth_token).delete do |req|
+      req.url full_url(url)
+      req.body = params[:data].to_json
+    end
+  end
+
+  def patch(url, params={})
+    puts "[educoder] request params: #{params}"
+    auth_token = authen_params(params[:token])
+    conn(auth_token).patch do |req|
+      req.url full_url(url)
+      req.body = params[:data].to_json
+    end
+  end
+
+  def put(url, params={})
+    puts "[educoder] put request params: #{params}"
+    conn(authen_params(params[:token])).put do |req|
+      req.url full_url(url)
+      req.body = params[:data].to_json
+    end
+  end
+
+  private
+  def conn(url, hash={})
+    par = []
+    hash.each do |k,v|
+      par << "#{k}=#{v}"
+    end
+
+    uri = URI("#{url}.json?#{par.join('&')}&private_token=#{private_token}")
+    puts "[educoder] request_url: #{uri}"
+    response = Net::HTTP.get_response(uri)
+    puts "[educoder] response code: #{response.code.to_i}"
+    if response.code.to_i != 200
+      puts "======= 接口请求失败！"
+      raise '接口请求失败.'
+      return nil
+    end
+    JSON.parse(response.body)
+  end
+
+  def base_url
+    Rails.application.config_for(:configuration)['educoder']['base_url']
+  end
+
+  def domain
+    Rails.application.config_for(:configuration)['educoder']['main_site']
+  end
+
+  def private_token
+    Rails.application.config_for(:configuration)['educoder']['token']
+  end
+
+  def access_key_secret
+    Gitea.gitea_config[:access_key_secret]
+  end
+
+  def api_url(url)
+    [domain, base_url, url].join('/')
+  end
+
+  def full_url(api_rest, action='post')
+    url = [api_url, api_rest].join('').freeze
+    url = action === 'get' ? url : URI.escape(url)
+    puts "[gitea] request url: #{url}"
+    return url
+  end
+
+
+
+  def authen_params(token)
+    (token.is_a? String) ? {token: token} : Hash(token)
+  end
+
+  def render_data(response)
+    case response.status
+    when 201, 200
+      JSON.parse(response.body)
+    else
+      nil
+    end
+  end
+end
diff --git a/app/services/educoder/repository/commits/list_service.rb b/app/services/educoder/repository/commits/list_service.rb
new file mode 100644
index 000000000..1a83c2600
--- /dev/null
+++ b/app/services/educoder/repository/commits/list_service.rb
@@ -0,0 +1,29 @@
+class Educoder::Repository::Commits::ListService < Educoder::ClientService
+  attr_reader :repo_name, :args
+
+  # ref: The name of the commit/branch/tag. Default the repository’s default branch (usually master)
+  # repo_name: the name of repository
+  #  Educoder::Repository::Commits::ListService.call('fessf/6hiwcb7o20200917174054')
+  def initialize(repo_name, **args)
+    @repo_name = repo_name
+    @args      = {ref: 'master'}.merge(args.compact)
+  end
+
+  def call
+    response = get(url, params)
+    render_result(response)
+  end
+
+  private
+  def params
+    @args.merge(repo_name: repo_name)
+  end
+
+  def url
+    "commits".freeze
+  end
+
+  def render_result(response)
+    response['commits'] || []
+  end
+end
diff --git a/app/services/educoder/repository/entries/get_service.rb b/app/services/educoder/repository/entries/get_service.rb
new file mode 100644
index 000000000..9c4fed92e
--- /dev/null
+++ b/app/services/educoder/repository/entries/get_service.rb
@@ -0,0 +1,30 @@
+class Educoder::Repository::Entries::GetService < Educoder::ClientService
+  attr_reader :repo_name, :filepath
+
+  # filepath: path of the dir, file, symlink or submodule in the repo
+  # repo_name: the name of repository
+  def initialize(repo_name, filepath)
+    @repo_name = repo_name
+    @filepath  = filepath
+  end
+
+  def call
+    get(url, params)
+  end
+
+  private
+  def params
+    Hash.new.merge(repo_name: repo_name, path: filepath)
+  end
+
+  def url
+    "file_content".freeze
+  end
+
+  def render_result(response)
+    body = JSON.parse(response.body)
+    if body['status'].to_i === -1
+      raise '无权限访问.'
+    end
+  end
+end
diff --git a/app/services/educoder/repository/entries/list_service.rb b/app/services/educoder/repository/entries/list_service.rb
new file mode 100644
index 000000000..dd3abea77
--- /dev/null
+++ b/app/services/educoder/repository/entries/list_service.rb
@@ -0,0 +1,39 @@
+class Educoder::Repository::Entries::ListService < Educoder::ClientService
+  attr_reader :repo_name, :args
+
+  # ref: The name of the commit/branch/tag. Default the repository’s default branch (usually master)
+  # repo_name: the name of repository
+  # args:
+  # {
+  #   "repo_name": "wmov43ez8/5xahe2t7nv20191022173304",
+  #   "path": 'src'
+  # }
+  # Educoder::Repository::Entries::ListService.new('wmov43ez8/5xahe2t7nv20191022173304', {path: 'src'}).call
+  def initialize(repo_name, args={})
+    @repo_name = repo_name
+    @args      = args.compact
+  end
+
+  def call
+    get(url, params)
+  end
+
+  private
+  def params
+    @args.merge(repo_name: repo_name)
+  end
+
+  def url
+    "repository".freeze
+  end
+
+  def render_result(response)
+    body = JSON.parse(response.body)
+    case response.status
+    when 200
+      body
+    else
+     []
+    end
+  end
+end