文章目錄

• • • 第一周 實(shí)習(xí)任務(wù)
    • 一、erp開發(fā)規(guī)范調(diào)整
    • • 1.1 開發(fā)范例總結(jié)
    • 二、json格式數(shù)據(jù)轉(zhuǎn)成對(duì)象，并存入數(shù)據(jù)庫(kù)
    • • 2.1 先解決了獲取json文件數(shù)據(jù)，轉(zhuǎn)成對(duì)象
      • 2.2 第二步：加上數(shù)據(jù)庫(kù)操作（全過(guò)程）

第一周 實(shí)習(xí)任務(wù)

1.erp開發(fā)范例調(diào)整
2.java 自定義數(shù)據(jù)保存

一、erp開發(fā)規(guī)范調(diào)整

1.1 開發(fā)范例總結(jié)

類型如下：kj左樹右表、kjj1左樹右單條記錄、j1顯示或編輯單條記錄、類型=其他（空）顯示或編輯最常用的列表（多條記錄報(bào)表）、tree只顯示樹、dj單據(jù)處理、b2/ud左右或上下兩個(gè)grid報(bào)表、tb（tree+bb）功能和kj相同但是左樹放在框架內(nèi)、tud左樹上下兩個(gè)grid報(bào)表。

保留字段：tzid，djlx，djlb,shbs,shrq,shr,zdr,zdrq,flowid

總結(jié)：根據(jù)新人文檔學(xué)習(xí)Java開發(fā)規(guī)范文檔，其中包括微服務(wù)開發(fā)規(guī)范、接口編寫規(guī)范、阿里巴巴Java開發(fā)手冊(cè)；通用報(bào)表開發(fā)工具文檔；微信培訓(xùn)文檔。使用通用報(bào)表開發(fā)工具文檔、開發(fā)范例、同事的測(cè)試用例以及通用報(bào)表使用說(shuō)明進(jìn)行開發(fā)測(cè)試學(xué)習(xí)。初步了解通用報(bào)表的使用和功能，例如報(bào)表按鈕、報(bào)表查詢條件、報(bào)表SQL、報(bào)表欄目字段、javascript函數(shù)等。

二、json格式數(shù)據(jù)轉(zhuǎn)成對(duì)象，并存入數(shù)據(jù)庫(kù)

• maven依賴

<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.47</version> </dependency> <dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.47</version> </dependency>

2.1 先解決了獲取json文件數(shù)據(jù)，轉(zhuǎn)成對(duì)象

[{"name":"呂招煥","age":22},{"name":"lzhuan","age":12},{"name":"Freedom","age":15} ] package com.lzhuan;import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import java.io.BufferedReader; import java.io.File; import java.io.FileReader;public class JsonOperation {public static void main(String[] args) throws Exception {tokens();}public static void tokens() throws Exception {// 獲得json字符串String s = readJsonData("D:\\Environment\\data.json");JSONArray jsonArray = JSON.parseArray(s);for (int i = 0; i < jsonArray.size(); i++) {//獲取到每一個(gè)名字String nameString = jsonArray.getString(i);Teacher teacher = JSON.parseObject(nameString, Teacher.class);System.out.println(teacher);}}//讀取json文件內(nèi)容public static String readJsonData(String filePathName) throws Exception {StringBuilder builder = new StringBuilder();File file = new File(filePathName);BufferedReader br = new BufferedReader(new FileReader(file));String s = null;while ((s=br.readLine()) != null){builder.append("\n"+s);}br.close();return builder.toString();} }

2.2 第二步：加上數(shù)據(jù)庫(kù)操作（全過(guò)程）

2.2.1 準(zhǔn)備json文件

[{"name":"呂招煥","age":22},{"name":"lzhuan","age":12},{"name":"Freedom","age":15} ]

2.2.2 實(shí)體類

package com.lzhuan;public class Teacher {private String name;private int age;public Teacher(){}public Teacher(String name,int age){this.name = name;this.age = age;}public String getName(){return name;}public void setName(String name){this.name = name;}public int getAge(){return age;}public void setAge(int age){this.age = age;}@Overridepublic String toString() {return "Teacher{" +"name='" + name + '\'' +", age=" + age +'}';} }

2.2.3 數(shù)據(jù)庫(kù)連接對(duì)象

package com.lzhuan;import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException;public class Conn {Connection con;public Connection getConnection(){try {Class.forName("com.mysql.jdbc.Driver");} catch (ClassNotFoundException e) {e.printStackTrace();}try {con = DriverManager.getConnection("jdbc:mysql:"+ "//localhost:3306/student?useUnicode=true&characterEncoding=utf-8", "root", "123456");System.out.println("數(shù)據(jù)庫(kù)連接成功！");} catch (SQLException e) {e.printStackTrace();}return con;}public static void main(String[] args) {Conn conn = new Conn();conn.getConnection();} }

2.2.4 json數(shù)據(jù)轉(zhuǎn)為對(duì)象，并存入數(shù)據(jù)庫(kù)

package com.lzhuan;import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.SQLException;import com.lzhuan.Conn;public class JsonOperation {static Connection con = null;static PreparedStatement sql;public static void main(String[] args) throws Exception {tokens();}public static void tokens() throws Exception {Conn conn = new Conn();con = conn.getConnection();// 獲得json字符串String s = readJsonData("D:\\Environment\\data.json");JSONArray jsonArray = JSON.parseArray(s);for (int i = 0; i < jsonArray.size(); i++) {//獲取到每一個(gè)名字String nameString = jsonArray.getString(i);Teacher teacher = JSON.parseObject(nameString, Teacher.class);String name = teacher.getName();int age = teacher.getAge();try {sql = con.prepareStatement("insert into student(name,age) values(?,?)");sql.setString(1,name);sql.setInt(2,age);int m = sql.executeUpdate();if (m>0) System.out.println("添加數(shù)據(jù)成功！");} catch (SQLException e) {e.printStackTrace();}}}//讀取json文件內(nèi)容public static String readJsonData(String filePathName) throws Exception {StringBuilder builder = new StringBuilder();File file = new File(filePathName);BufferedReader br = new BufferedReader(new FileReader(file));String s = null;while ((s=br.readLine()) != null){builder.append("\n"+s);}br.close();return builder.toString();} }

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