08 2020 档案

process.waitFor()
摘要：waitFor：等待子进程执行结束，或者已终止子进程，此方法立即返回。当RunTime对象调用exec方法后，jvm会创建一个子进程，该子进程与jvm建立三个管道连接：标准输入流、标准输出流、标准错误流。假设该子进程不断向标准输入流、标准输出流写数据，而jvm不读取的话，会导致缓冲区塞满而无法继续写 阅读全文
posted @ 2020-08-28 11:42 忧伤还是快乐EL 阅读(4940) 评论(0) 推荐(0)
BeanPostProcessor加载次序及其对Bean造成的影响分析,以及Springboot 配置类（ @Configuration） 不能使用@Value注解从application.yml中加载值
摘要：https://blog.csdn.net/m0_37962779/article/details/78605478 https://blog.csdn.net/hongweigg/article/details/79104321 阅读全文
posted @ 2020-08-26 16:02 忧伤还是快乐EL 阅读(366) 评论(0) 推荐(0)
springboot读取配置文件
摘要：Resource resource = new ClassPathResource(“application.properties”); Properties props = PropertiesLoaderUtils.loadProperties(resource); 阅读全文
posted @ 2020-08-26 15:46 忧伤还是快乐EL 阅读(155) 评论(0) 推荐(0)
RuntimeError: Model class apps.settings.licensefile.LicenseFile doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.
摘要：RuntimeError: Model class apps.settings.licensefile.LicenseFile doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS. 这 阅读全文
posted @ 2020-08-20 16:10 忧伤还是快乐EL 阅读(140) 评论(0) 推荐(0)
SHELL脚本执行mongodb 添加用户权限
摘要：fit_mongo.sh和fit_mongo.sh在同一级目录下： MongoDB添加用户： 1、设置权限：mongodb.conf中添加 auth =true 2、启动mongoDB: cd mongo/mongodb-linux-x86_64-rhel62-4.2.3/bin/./mongod 阅读全文
posted @ 2020-08-11 20:00 忧伤还是快乐EL 阅读(1078) 评论(0) 推荐(0)
MongoClient连接数据库
摘要：public class DbManager { private static volatile DbManager instance; private static final Logger logger = LoggerFactory.getLogger(DbManager.class); pr 阅读全文
posted @ 2020-08-11 19:55 忧伤还是快乐EL 阅读(2213) 评论(0) 推荐(0)
Error: Cannot find module 'bug-versions/package.json'
摘要：Error: Cannot find module 'bug-versions/package.json'自动装配package.json，然后自动安装所需的依赖npm install --save-dev cnpm install --save-dev ERROR Error: Cannot fi 阅读全文
posted @ 2020-08-10 16:13 忧伤还是快乐EL 阅读(7802) 评论(0) 推荐(0)
windows编写linux执行的脚本，并更改格式
摘要：用vim打开该sh文件，输入： :set ff //回车，显示fileformat=dos :set ff=unix //重新设置下文件格式 :wq //保存退出 阅读全文
posted @ 2020-08-08 10:51 忧伤还是快乐EL 阅读(368) 评论(0) 推荐(0)
djongo 前端页面展示自定义api返回的列表数据，并拼接到table上
摘要：前端页面： 1 {% extends 'base.html' %} 2 {% load static %} 3 {% load bootstrap3 %} 4 {% load i18n %} 5 {% load common_tags %} 6 7 {% block content %} 8 <di 阅读全文
posted @ 2020-08-05 20:24 忧伤还是快乐EL 阅读(300) 评论(0) 推荐(0)
ou are trying to add a non-nullable field 'address' to person without a default; we can't do that (the database needs something to populate existing rows).
摘要：You are trying to add a non-nullable field 'address' to person without a default; we can't do that (the database needs something to populate existing 阅读全文
posted @ 2020-08-05 19:46 忧伤还是快乐EL 阅读(491) 评论(0) 推荐(0)
python string 类型的公钥转换类型并解密
摘要：python3.X 1 def checkLicense(str):#str为解密的字符串 2 str_base64 = base64.b64decode(str) 3 public_key = "1qaz2wsx3edc" 4 5 de_public_key = str2key(public_ke 阅读全文
posted @ 2020-08-04 19:55 忧伤还是快乐EL 阅读(759) 评论(0) 推荐(0)