Idea generates entity classes from database tables

original text ip：https://blog.csdn.net/crazyman2010/article/details/69668484

Configuration database

        Open database settings View->Tool Windows->Database 
On the right will open a Database The window of , Click on +, choice Data Source, Choose your own database type , Then fill in the parameters , You can see all the tables in your database .

Modify the script

        By default , Use script generated files , There are some problems in naming , such as user_name surface , Will generate User_name.java, The same is true for the attributes inside , But if we want to generate UserName.java Words , If you modify the script . 
Right click on one of the tables , choice Script Extensions->Goto Scripts Directory, The left will switch to Scratches window , open Generate POJOs.clj, Modify the following code ：

(defn- java-name [name]
    (apply str (map clojure.string/capitalize (re-seq #"\w+" name))))

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It is amended as follows

(defn- java-name [name]
    ; Remove it here _ Symbol , And capitalize _ The first letter after the symbol 
    (apply str (map clojure.string/capitalize (map #(clojure.string/replace % #"_" "") (re-seq #"[^_]+" name)))))

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You can also modify other things in this script , For example, remove the prefix information of the table

(defn- generate-pojo [directory table]
    (let [class-name (java-name (subs (.getName table) 4))  ; Remove it here xxx_ These characters 

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This script uses clojure Compiling , Syntax and functions can be queried here ： 
http://clojuredocs.org/

After modification , On related tables , The right choice Script Extensions->Generate POJOs.clj, Just save it in the pop-up window .

If you use the latest version idea, Namely idea 2018.2. Then there is no need to modify the script . It removes the underline directly .