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一、项目介绍

Python 实现博客服务端，客户端分别 PC Web端 和 手机 Android端

1.项目来源

廖雪峰老师

2.项目 Github

3.运行效果

二、Android 端实现

1.建立一个简单的 ListView 展示

1.1 布局

ListView 显示数据

1.2 List的初始化

private ListView mListView;    private void initValue() {        mContext = this;        mBlogs = new ArrayList
   
    ();        mCustomAdapter = new CustomAdapter
    
     (mBlogs);        mCustomAdapter.setLayoutView(this);        mListView.setAdapter(mCustomAdapter);    }    @Override    public 
     
       View setView(int position, View convertView, ViewGroup parent) {        ViewHolder holder;        if (convertView == null) {            convertView = LayoutInflater.from(mContext).inflate(R.layout.item_blog_list, null);            holder = new ViewHolder();            holder.tv_title = (TextView) convertView.findViewById(R.id.tv_title);            holder.tv_content = (TextView) convertView.findViewById(R.id.tv_content);            convertView.setTag(holder);        } else {            holder = (ViewHolder) convertView.getTag();        }        Blogs mBlog = mBlogs.get(position);        holder.tv_title.setText(mBlog.name);        holder.tv_content.setText(mBlog.summary);        return convertView;    }
     
    
   

2.Python 数据获取

这里使用第三方库 volley.jar

2.1 Python 服务端 API 接口

获取应用列表数据

@get('/api/blogs/all')def api_blogs(*, page='1'):    blogs = yield from Blog.findAll(orderBy='created_at desc')    return dict(blogs=blogs)

2.2 volley 的使用和网络接口

=============================================================================// 初始化网络RequestManager.init(this);=============================================================================// 服务端地址，注意下面的描述public class NetConfig {
       /**     * 因为http://127.0.0.1:9000/ 访问PC本地机启动的服务器时会报错, 因为android会默认访问它本身 故使用     * http://10.0.2.2:9000/     */    public static final String HOST_LAVA_POWERSAVE = "http://10.0.2.2:9000";    public static final String URL_BLOG_LIST = HOST_LAVA_POWERSAVE + "/api/blogs/all";=============================================================================    // API 接口public class ApiRequests {
       private static ApiRequests mInstance;    public static ApiRequests getInstance() {        if (mInstance == null) {            mInstance = new ApiRequests();        }        return mInstance;    }    public void getBlogs(Context context, Listener
    listener, ErrorListener errorListener) {        String url = NetConfig.URL_BLOG_LIST;        GsonRequest
   
     request = new GsonRequest
    
     (Method.GET, url, BlogsHead.class, (Listener
     
      ) listener, errorListener);        RequestManager.getRequestQueue().add(request);    }}=============================================================================客户端调用    public void updateBlogs() {        Log.d(TAG, "updateBlogs");        ApiRequests.getInstance().getBlogs(mContext, new Listener
      
       () {            @Override            public void onResponse(BlogsHead response) {                mBlogs.clear();                mBlogs = response.blogs;                mHandler.sendEmptyMessage(UPDATE_UI);            }        }, new Response.ErrorListener() {            @Override            public void onErrorResponse(VolleyError error) {                Log.d(TAG, error.toString());            }        });    }
      
     
    
   

2.1 数据结果

如下的，看起很凌乱对不对，可以使用 Json格式转换，这样看得懂一些

Json格式化的数据如下

{    "blogs": [{        "id": "001515633814914b02515cf6b284ec1b1eef741d32434ab000",        "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",        "user_name": "123",        "user_image": "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120",        "name": "Create Blog",        "summary": "Tursday",        "content": "Good day",        "created_at": 1515630000.0    }, {        "id": "0015156358419219e13a79d61584f56bb7242064783e9ff000",        "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",        "user_name": "123",        "user_image": "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120",        "name": "sdf",        "summary": "sdaf",        "content": "asfdasf",        "created_at": 1515640000.0    }, {        "id": "0015156359616096a8f75b1490348b69857777919992a7d000",        "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",        "user_name": "123",        "user_image": "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120",        "name": "Good old days",        "summary": "dreams",        "content": "We have all got our \"good old days\" tucked away inside our hearts, and we return to them in dreams like cats to favorite armchairs.",        "created_at": 1515640000.0    }, {        "id": "001515636301092f26271f023994d07863fe52a164781d8000",        "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",        "user_name": "123",        "user_image": "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120",        "name": "Good old days",        "summary": "dreams",        "content": "We have all got our \"good old days\" tucked away inside our hearts, and we return to them in dreams like cats to favorite armchairs.",        "created_at": 1515640000.0    }, {        "id": "001515758667406801b75382e684a4891b97cb12b566760000",        "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",        "user_name": "123",        "user_image": "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120",        "name": "Hello world",        "summary": "Hello",        "content": "Python study",        "created_at": 1515760000.0    }, {        "id": "1",        "user_id": "1",        "user_name": "123",        "user_image": "safdsadfsdf",        "name": "234",        "summary": "adsffasdf",        "content": "fasdfsadfsa",        "created_at": 123123000.0    }]}

3 解析数据库

这里使用 GSON

根据上述的数据，定义下面的类=========================================================package com.su.androidblog.bean;import java.util.List;public class BlogsHead {    public List
   
     blogs;}根据上述的数据，定义下面的类=========================================================package com.su.androidblog.bean;public class Blogs {    /*     * "blogs": [{ "id": "001515758667406801b75382e684a4891b97cb12b566760000",     * "user_id": "00151558881765135c1d8940a8f4bf19bb2c836eccdb707000",     * "user_name": "123", "user_image":     * "http://www.gravatar.com/avatar/b2d7d2d13aed54c2ed7feb538b382b42?d=mm&s=120"     * , "name": "Hello world", "summary": "Hello", "content": "Python study",     * "created_at": 1515760000.0     */    public String id;    public String user_id;    public String user_name;    public String user_image;    public String name;    public String summary;    public String content;    public String created_at;}=========================================================ApiRequests.java    public void getBlogs(Context context, Listener
     listener, ErrorListener errorListener) {
           String url = NetConfig.URL_BLOG_LIST;        GsonRequest
    
      request = new GsonRequest
     
      (Method.GET, url, BlogsHead.class, (Listener
      
       ) listener, errorListener);        RequestManager.getRequestQueue().add(request);    }=========================================================    ApiRequests.getInstance().getBlogs(mContext, new Listener
       
        () {
               @Override            public void onResponse(BlogsHead response) {
                   mBlogs.clear();                mBlogs = response.blogs;                mHandler.sendEmptyMessage(UPDATE_UI);            }=========================================================
       
      
     
    
   

4 显示数据

mHandler.sendEmptyMessage(UPDATE_UI);    private Handler mHandler = new Handler() {        @Override        public void handleMessage(Message msg) {            switch (msg.what) {            case UPDATE_UI:                mCustomAdapter.updateData((ArrayList
   
    ) mBlogs);                break;            default:                break;            }        }    };
   

5 小结

本项目的 GitHub

Python 应该还有其他用途吧，打算学下 Python 写的爬虫项目