拿到一个写好的项目该从哪里开始入手

Question

刚进公司,经理把他们写的项目给我看让我熟悉说后面应该会参与开发,我拿到项目不知道从哪里开始入手,这个项目是一个maven项目框架是spring ,mybatis.给大神求指点

Answer 1

            ۣۣۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ            ۣۣۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ            

Answer 2

从修改BUG开始。。

Answer 3

+1

Answer 4

从修bug开始，修bug是了解项目最好的方式没有之一。

Answer 5

在controller层断点 一点点往下看 就行了

Answer 6

从这里看起，https://my.oschina.net/u/2312022/blog/743014 

来一个请求，然后断点逐步跟进去，你就懂了

Answer 7

请问这个是什么原理

Answer 8

先跑起来,然后每个层的代码都看下,DAO怎么写,service怎么写的,一般项目,2天就能上手了吧

Answer 9

回复
@0x0001 : ۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ

Answer 10

回复
@554330833a : code: 'u06e3u06d6u06d6u06d6'

Answer 11

@vvtf 回复
@vvtf : 为什么会出现这样的情况？

Answer 12

回复
@0x0001 : : ۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ (5

Answer 13

            ۣۣۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ            ۣۣۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖۖ            

Answer 14

先跑起来····

Answer 15

图片上传居然没显示，算了，将就着看，就这样

Answer 16

请问你们公司用的IDE是什么工具??

Answer 17

也来答一下，同样是新手，入职4个月了，做些个增删改查

刚入职的时候，基础很差，毕竟大部分都是自学的，公司的开发工具idea从来没接触过，服务器也不是tomcat，然后springmvc和spring.mybatis学的一塌糊涂，还好大神没嫌弃我·······

入手，先跑起来，能进到首页就对了，推荐用火狐的firebug，然后就可以

可以看到各种onclick事件绑定的js函数，或者是后台请求地址，然后找到对应的方法

还有这种直接找到对应的方法，debug操作一部一步的走，每一个页面找到对应的controller和对应页面，这走的步骤其实就是熟悉业务流程的过程，要明白controller和service层中的每一步的作用，但不用太深究，明白这个模块处理什么业务大概就好，之后走完全部流程下来差不多慢慢就熟悉了

Answer 18

很简单，了解采用框架。这种项目通过tomcat跑起来，然后从前端（jsp或html或各种视图模板）到，mvc（控制器(C)  --》 serVice  -- 》Mapper）这几层之前的关系。也就是spring mvc + MyBatis。

技巧：由浅入深，先了解大体结构，在深入到具体业务一点点深入了解。保持思路清晰，可以事半功倍