小程序编译运行-效果预览
准备工作
技术
流程图
接口文档
问题 选项、返回结果、结果汇总报告
业务开发
pom依赖
<!-- fastjson 尽量保持更新，预防bug-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.74</version>
</dependency>
<!-- guava支持-->
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>29.0-jre</version>
</dependency>
<!-- 代码生成lombok，需要配合idea插件-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
<scope>provided</scope>
</dependency>
公共类
封装统一返回，泛型
跨域问题
com.bennyrhys.kafka_study1.wechat.common.BaseResponseVO
package com.bennyrhys.kafka_study1.wechat.common;
import java.util.UUID;
import lombok.Data;
/**
* @author : bennyrhys
* @description : 公共返回对象
**/
@Data
public class BaseResponseVO<M> {
private String requestId;
private M result;
public static<M> BaseResponseVO success(){
BaseResponseVO baseResponseVO = new BaseResponseVO();
baseResponseVO.setRequestId(genRequestId());
return baseResponseVO;
}
public static<M> BaseResponseVO success(M result){
BaseResponseVO baseResponseVO = new BaseResponseVO();
baseResponseVO.setRequestId(genRequestId());
baseResponseVO.setResult(result);
return baseResponseVO;
}
private static String genRequestId(){
return UUID.randomUUID().toString();
}
}
com.bennyrhys.kafka_study1.wechat.common.CorsFilter
package com.bennyrhys.kafka_study1.wechat.common;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletResponse;
import org.springframework.context.annotation.Configuration;
/**
* @author : bennyryhs
* @description : 跨域问题解决
**/
@WebFilter(filterName = "CorsFilter")
@Configuration
public class CorsFilter implements Filter {
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) res;
response.setHeader("Access-Control-Allow-Origin","*");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
chain.doFilter(req, res);
}
}
工具类
json文件读取（object、array）类型
com.bennyrhys.kafka_study1.wechat.utils.FileUtils
package com.bennyrhys.kafka_study1.wechat.utils;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.Optional;
import lombok.Cleanup;
import lombok.extern.slf4j.Slf4j;
/**
* @author : bennyrhys
* @description : 文件工具类
**/
@Slf4j
public class FileUtils {
public static String readFile(String filePath) throws IOException {
@Cleanup
BufferedReader reader = new BufferedReader(
new FileReader(new File(filePath))
);
String lineStr = "";
StringBuffer stringBuffer = new StringBuffer();
while ((lineStr = reader.readLine()) != null) {
stringBuffer.append(lineStr);
}
return stringBuffer.toString();
}
public static Optional<JSONObject> readFile2JsonObject(String filePath){
try {
String fileContent = readFile(filePath);
log.info("readFile2Json fileContent: [{}]" , fileContent);
return Optional.ofNullable(JSON.parseObject(fileContent));
} catch (IOException e) {
e.printStackTrace();
}
return Optional.empty();
}
public static Optional<JSONArray> readFile2JsonArray(String filePath){
try {
String fileContent = readFile(filePath);
log.info("readFile2JsonArray fileContent: [{}]" , fileContent);
return Optional.ofNullable(JSON.parseArray(fileContent));
} catch (IOException e) {
e.printStackTrace();
}
return Optional.empty();
}
}
配置类conf
实体类
com.bennyrhys.kafka_study1.wechat.conf.WeChatTemplateProperties
package com.bennyrhys.kafka_study1.wechat.conf;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
import java.util.List;
@Data
@Configuration
@ConfigurationProperties(prefix = "template")
/**
* 存储模板调查结果
*/
public class WeChatTemplateProperties {
private List<WechatTemplate> templates;
private int templateResultType; // 结果类型 0-文件 1-数据库 2-es
private String templateResultFilePath; // 结果文件路径
/**
* 存储模板
*/
@Data
public static class WechatTemplate {
private String templateId;
private String templateFilePath;
private boolean active;
}
}
资源类resouce
template
[{
"questionId": "1",
"question": "今天几号",
"answer": "",
"options": [
{
"label": "1号", "value": "A"},
{
"label": "2号", "value": "B"},
{
"label": "3号", "value": "C"},
{
"label": "4号", "value": "D"}
]},
{
"questionId": "2",
"question": "你喜爱的颜色",
"answer": "",
"options": [
{
"label": "红色", "value": "A"},
{
"label": "黄色", "value": "B"},
{
"label": "绿色", "value": "C"},
{
"label": "紫色", "value": "D"}
]}
]
kafka_study1/src/main/resources/templates/templateResult.json
{
"templateId": "001",
"totalNumber": "102",
"statistics": [
{
"questionId": "1",
"question": "今天几号",
"answers": [
{
"label": "A", "value": 10},
{
"label": "B", "value": 50},
{
"label": "C", "value": 12},
{
"label": "D", "value": 17}
]
},
{
"questionId": "2",
"question": "你喜爱的颜色",
"answers": [
{
"label": "A", "value": 12},
{
"label": "B", "value": 52},
{
"label": "C", "value": 17},
{
"label": "D", "value": 17}
]
}
]
}
配置文件yml
application.yml
server:
port: 8080
template:
templates:
- {
"templateId":"1", "templateFilePath":"E:/JAVA/kafka_study1/src/main/resources/templates/template.json", "active":true}
- {
"templateId":"2", "templateFilePath":"E:/JAVA/kafka_study1/src/main/resources/templates/template.json", "active":false}
template-result-type: 0 # 结果类型 0-文件 1-数据库 2-es(注意驼峰命名改横线小写链接)
template-result-file-path: "E:/JAVA/kafka_study1/src/main/resources/templates/templateResult.json"
写业务
https://github.com/bennyrhys/kafka_study.git
检验
查询模板信息
http://localhost:8080/v1/template
查询模板统计结果
http://localhost:8080/v1/template/result
提交调查问卷结果
windows通过gitbash模拟linux环境 post
返回结果
requestId":“0725ef59-52fb-432c-aef5-4276cc25ae37”,“result”:null}
-- 查询模板信息
curl -XGET http://localhost:8080/v1/template
-- 查询模板统计结果
curl -XGET http://localhost:8080/v1/template/result
-- 传入调查问卷结果
curl -XPOST -H "Content-Type:application/json; charset=UTF-8" http://localhost:8080/v1/template/report -d \
'{
templateId:"001",
result:[
{"questionId":"1","question":"今天几号","answer":"A"},
{"questionId":"2","question":"你喜爱的颜色","answer":"B"}
]
}'
netstat -ano | findstr 443
Kafka Producer集成单例
kafka的Producer是线程安全的，实际生成环境不建议Producer创建多回。
如果多线程情况下创建多个producer，性能消耗比想象中消耗要大。甚至不如单线程。
因为producer的send是 往中间队列中存入数据， 后台线程将数据批量的刷给服务器。创建多个producer使频繁的上下文争抢，上下文切换
而每次进入controller->service就相当于创建一个新实例，为了防止producer被创建多次，应该单独把producer封装到common或utils或conf
Https
SSL的AC证书认证
域名备案20个工作日左右
同一个证书只能绑定一个域名
绑定域名不包含二三级子域名
证书下载
因为springBoot内置的tomcat
检验证书+添加二级域名：域名解析会多出一行txt，
下载出 的证书及密码
启动协议变为https
server:
port: 443
ssl:
key-store: 3974629_www.996cloud.work.pfx # 证书的文件名
key-store-password: O4d8Fl8t
准备上传服务器的文件
解决本地443端口号冲突
windows查看端口号
C:\Users\rxguo>netstat -ano |findstr "443"
赫然发现443被一个pid为7296的进程占用着.
查看该pid对应的程序:
tasklist |findstr "进程id号"
于是我尝试杀掉该进程:被拒绝
taskkill /f /t /im "进程id或者进程名称"
打开VM虚拟机,点击菜单中的“编辑-首选项”,把共享虚拟机给关闭;
解决
https://localhost/v1/template
待解决
查logbak.xml
将windows文件压缩tgz
tar -zcvf 文件.tgz 文件名
linux文件上传
yum install -y lrzsz
linux修改项目配置
地址和ip地址
root@iZ2ze21075lo3b5h7k3wozZ wechat]# ll
total 29468
-rw-r--r-- 1 root root 30175119 Oct 21 17:29 wechat-template.tgz
[root@iZ2ze21075lo3b5h7k3wozZ wechat]# tar -zxf wechat-template.tgz
[root@iZ2ze21075lo3b5h7k3wozZ wechat]# ll
total 29472
drwxr-xr-x 3 1173931 1049089 4096 Oct 21 17:27 wechat-template
-rw-r--r-- 1 root root 30175119 Oct 21 17:29 wechat-template.tgz
[root@iZ2ze21075lo3b5h7k3wozZ wechat]# cd wechat-template
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# ll
total 32076
-rw-r--r-- 1 1173931 1049089 4554 Oct 21 16:57 3974629_www.996cloud.work.pfx
-rw-r--r-- 1 1173931 1049089 819 Oct 21 17:07 application.yml
-rw-r--r-- 1 1173931 1049089 32825383 Oct 21 17:25 kafka-template.jar
drwxr-xr-x 2 1173931 1049089 4096 Oct 21 17:21 templates
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# vi application.yml
解决centos7端口443占用
停掉之前的项目
cd /usr/local/java/tomcat/apache-tomcat-8.5.40/bin/
netstat -nap | grep 443
验证https线上运行成功
https://www.996cloud.work/v1/template
注意因为线上环境缺少kafka所以会报warn
启动脚本
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# vi start.sh
# !/bin/bash
nohub java -jar wechat-template.jar &
// 赋予脚本执行权限
-rw-r--r-- 1 root root 51 Oct 22 10:36 start.sh
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# chmod u+x start.sh
// 有了权限文件名变为绿色
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# ll
total 32080
-rw-r--r-- 1 1173931 1049089 4554 Oct 21 16:57 3974629_www.996cloud.work.pfx
-rw-r--r-- 1 1173931 1049089 786 Oct 22 10:21 application.yml
-rwxr--r-- 1 root root 51 Oct 22 10:36 start.sh
解决：Linux下-bash: nohup: command not found或者bash: nohup: 未找到命令的问题
不要错写成nohub是nohup
https://blog.csdn.net/qq_40241957/article/details/98584207
解决安全组443
1 安全组的端口添加绿卡443
2 centos的防火墙关闭
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# systemctl status fillwalld
Unit fillwalld.service could not be found.
[root@iZ2ze21075lo3b5h7k3wozZ wechat-template]# systemctl status firewalld
● firewalld.service - firewalld - dynamic firewall daemon
Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)
Active: inactive (dead)
Docs: man:firewalld(1)
小程序上传
开发工具
小程序
https://developers.weixin.qq.com/miniprogram/dev/devtools/stable.html
nodejs
https://nodejs.org/en/
配置node环境变量
检验node
C:\Users\rxguo>node -v
v12.19.0
微信公众平台
appid:wx9018260c5501cfb1238
配置小程序文件
解压qe文件
删除自动生成的dist文件
关注package.json,其中config.ts在src目录下
修改config.ts,修改后端对应地址
export const baseUrl: string = 'https://www.996cloud.work'
git bash右键，命令行编译
注意：install只会会产生node_moudle 模板文件特别大
// 检验是否有cnpm
cnpm -v
// 没有则安装cnpm
npm install -g cnpm --registry=https://registry.npm.taobao.org
cnpm install -g @tarojs/[email protected]
cnpm install
npm run build:weapp
注意如果taro 出现问题
taro info 查看版本信息
生成dist文件，就是要发布到微信程序里的内容
小程序编译运行-效果预览
centos的kafka环境配置
见博主的【消息队列】kafka 文章
解决物理内存不足 JVM调优
Java HotSpot™ 64-Bit Server VM warning: INFO: os::commit_memory(0x0000000794500000, 576716800, 0)
停止当前后台运行的jar
// 找到java对应的pid
netstat -anp
// 杀死进程pid
kill -9 进程pid
重新修改启动脚本
nohup java -Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m -jar wechat-template.jar &
JAVA_OPTS="-server -Xms256m -Xmx512m -XX:PermSize=128m -XX:MaxPermSize=256m"
java -Xms512m -Xmx512m -XX:+UseG1GC -XX:+PrintGCDetails -jar 项目.jar
命令行查看内存占用的pid
top
选着性
kill -9 pid号