1. 华为云云函数的Java8的申请
2. Java工程本地构建
编写代码如下：
package com.huawei.demo;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.huawei.services.runtime.Context;
import com.huawei.services.runtime.entity.apig.APIGTriggerEvent;
import com.huawei.services.runtime.entity.apig.APIGTriggerResponse;
import com.huawei.services.runtime.entity.dis.DISTriggerEvent;
import com.huawei.services.runtime.entity.dms.DMSTriggerEvent;
import com.huawei.services.runtime.entity.lts.LTSTriggerEvent;
import com.huawei.services.runtime.entity.smn.SMNTriggerEvent;
import com.huawei.services.runtime.entity.timer.TimerTriggerEvent;
import com.huawei.services.runtime.entity.eventgrid.EventGridTriggerEvent;
public class TriggerTests {
public static void main(String args\[\]) {}
public APIGTriggerResponse apigTest(APIGTriggerEvent event, Context context){
System.out.println(event);
JSONArray arrays = new JSONArray();
for(int i =0;i<4;i++)
{
JSONObject obj = new JSONObject();
obj.put("num", i);
obj.put("name", "张"+i);
arrays.add(obj);
}
Map<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json");
return new APIGTriggerResponse(200, headers, arrays.toJSONString());
}
public String smnTest(SMNTriggerEvent event, Context context){
System.out.println(event);
return "ok";
}
public String dmsTest(DMSTriggerEvent event, Context context){
System.out.println(event);
return "ok";
}
public String timerTest(TimerTriggerEvent event, Context context){
System.out.println(event);
return "ok";
}
public String disTest(DISTriggerEvent event, Context context) throws UnsupportedEncodingException{
System.out.println(event);
System.out.println(event.getMessage().getRecords()0.getRawData());
return "ok";
}
public String ltsTest(LTSTriggerEvent event, Context context) throws UnsupportedEncodingException {
System.out.println(event);
event.getLts().getData();
System.out.println("raw data: " + event.getLts().getRawData());
return "ok";
}
public String eventgridTest(EventGridTriggerEvent event, Context context){
System.out.println(event);return "ok";
}
}
3. 花生壳和mysql数据库映射
编写代码如下：
package com.huawei.demo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import com.lixin.model.Users;
public class DB {
private Connection conn;
public DB() {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://43.228.71.225:49254/jk202508", "root", "123456");
System.out.println("连接数据库成功："+conn);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public List<Users> queryUserDatas()
{
String sql="select * from t_user";
List<Users> lists = new ArrayList<Users>();
try {
PreparedStatement pstmt = conn.prepareStatement(sql);
ResultSet rs = pstmt.executeQuery();
while(rs.next())
{
Users u =new Users();
u.setUid(rs.getInt(1));
u.setUname(rs.getString(2));
u.setUpwd(rs.getString(3));
lists.add(u);
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
finally {
if(null!=conn)
{
try {
conn.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
return lists;
}
}
package com.lixin.model;
public class Users {
public int getUid() {
return uid;
}
public void setUid(int uid) {
this.uid = uid;
}
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpwd() {
return upwd;
}
public void setUpwd(String upwd) {
this.upwd = upwd;
}
private int uid;
private String uname;
private String upwd;
}
package com.huawei.demo;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.alibaba.fastjson.JSONArray;
import com.huawei.services.runtime.Context;
import com.huawei.services.runtime.entity.apig.APIGTriggerEvent;
import com.huawei.services.runtime.entity.apig.APIGTriggerResponse;
import com.huawei.services.runtime.entity.dis.DISTriggerEvent;
import com.huawei.services.runtime.entity.dms.DMSTriggerEvent;
import com.huawei.services.runtime.entity.eventgrid.EventGridTriggerEvent;
import com.huawei.services.runtime.entity.lts.LTSTriggerEvent;
import com.huawei.services.runtime.entity.smn.SMNTriggerEvent;
import com.huawei.services.runtime.entity.timer.TimerTriggerEvent;
import com.lixin.model.Users;
public class TriggerTests {
public APIGTriggerResponse apigTest(APIGTriggerEvent event, Context context) {
//通过映射本地数据库，做到了上云操作
DB db = new DB();
List<Users> lists =db.queryUserDatas();
//转换成JSON数据格式
JSONArray arrays =new JSONArray();
String result = arrays.toJSONString(lists);
Map<String, String> headers = new HashMap<String, String>();
headers.put("Content-Type", "application/json");
return new APIGTriggerResponse(200, headers, result);
}
public String smnTest(SMNTriggerEvent event, Context context) {
System.out.println(event);
return "ok";
}
public String dmsTest(DMSTriggerEvent event, Context context) {
System.out.println(event);
return "ok";
}
public String timerTest(TimerTriggerEvent event, Context context) {
System.out.println(event);
return "ok";
}
public String disTest(DISTriggerEvent event, Context context) throws UnsupportedEncodingException {
System.out.println(event);
System.out.println(event.getMessage().getRecords()0.getRawData());
return "ok";
}
public String ltsTest(LTSTriggerEvent event, Context context) throws UnsupportedEncodingException {
System.out.println(event);
event.getLts().getData();
System.out.println("raw data: " + event.getLts().getRawData());
return "ok";
}
public String eventgridTest(EventGridTriggerEvent event, Context context) {
System.out.println(event);
return "ok";
}
}
4 鸿蒙 ArkTS（端）+ 华为云 Java（云）+ MySQL（数据库） 总结
端云协同机制实战的总结
