javaweb 項(xiàng)目初始配置的方法步驟

第javaweb項(xiàng)目初始配置的方法步驟目錄項(xiàng)目初始流程：數(shù)據(jù)庫(kù)的建立于一開(kāi)始的分層：perties：首先創(chuàng)建數(shù)據(jù)庫(kù)連接的工具類：DBUtil1：得到配置文件對(duì)象：2：獲取數(shù)據(jù)庫(kù)連接：3：關(guān)閉資源：DBUtil類全部代碼：使用日志：

項(xiàng)目初始流程：

首先說(shuō)一下pom.xml文件的依賴：

dependencies

!--junit測(cè)試--

dependency

groupIdjunit/groupId

artifactIdjunit/artifactId

version4.12/version

scopetest/scope

/dependency

!--webservlet--

dependency

groupIdjavax.servlet/groupId

artifactIdjavax.servlet-api/artifactId

version4.0.1/version

scopeprovided/scope

/dependency

!--日志打印相關(guān)的jar--

dependency

groupIdorg.slf4j/groupId

artifactIdslf4j-log4j12/artifactId

version1.7.2/version

/dependency

dependency

groupIdorg.slf4j/groupId

artifactIdslf4j-api/artifactId

version1.7.2/version

/dependency

!--mysql驅(qū)動(dòng)包--

dependency

groupIdmysql/groupId

artifactIdmysql-connector-java/artifactId

version8.0.19/version

/dependency

!--json依賴--

dependency

groupIdcom.alibaba/groupId

artifactIdfastjson/artifactId

version1.2.62/version

/dependency

!--hutool工具集--

dependency

groupIdcn.hutool/groupId

artifactIdhutool-all/artifactId

version5.4.7/version

/dependency

!--commons-io依賴--

dependency

groupIdcommons-io/groupId

artifactIdcommons-io/artifactId

version2.4/version

/dependency

!--添加百度編輯器ueditor支持--

dependency

groupIdcommons-fileupload/groupId

artifactIdcommons-fileupload/artifactId

version1.3.1/version

/dependency

!--jstl依賴--

dependency

groupIdjavax.servlet/groupId

artifactIdjstl/artifactId

version1.2/version

/dependency

!--lombok插件--

dependency

groupIdjectlombok/groupId

artifactIdlombok/artifactId

version1.18.12/version

scopeprovided/scope

/dependency

/dependencies

build

finalNamelezijie-note/finalName

plugins

!--編譯環(huán)境插件--

plugin

groupIdorg.apache.maven.plugins/groupId

artifactIdmaven-compiler-plugin/artifactId

version2.3.2/version

configuration

source1.8/source

target1.8/target

encodingUTF-8/encoding

/configuration

/plugin

!--Tomcat插件--

plugin

groupIdorg.apache.tomcat.maven/groupId

artifactIdtomcat7-maven-plugin/artifactId

version2.1/version

configuration

port8080/port!--啟動(dòng)端口默認(rèn):8080--

path/note/path!--項(xiàng)目的站點(diǎn)名，即對(duì)外訪問(wèn)路徑--

servertomcat7/server!--服務(wù)器名稱--

/configuration

/plugin

/plugins

/build

/project

數(shù)據(jù)庫(kù)的建立于一開(kāi)始的分層：

perties：

#連接MYSQL數(shù)據(jù)庫(kù)的配置文件注：等號(hào)的前后不要寫空格

#驅(qū)動(dòng)名

jdbcName=com.mysql.cj.jdbc.Driver

#數(shù)據(jù)庫(kù)連接（db_lezijie_note是數(shù)據(jù)庫(kù)的名稱）

dbUrl=jdbc:mysql://localhost:3306/db_lezijie_noteuseUnicode=truecharacterEncoding=utf8serverTimezone=GMT%2B8useSSL=false

#數(shù)據(jù)庫(kù)的連接賬號(hào)（賬號(hào)基本上都是root）

dbName=root

#數(shù)據(jù)庫(kù)的連接密碼（每個(gè)人的數(shù)據(jù)庫(kù)密碼可能不一致，需要修改）

dbPwd=root

首先創(chuàng)建數(shù)據(jù)庫(kù)連接的工具類：DBUtil

1：得到配置文件對(duì)象：

*得到配置文件對(duì)象

privatestaticPropertiesproperties=newProperties();

static{

try{

//加載配置文件（輸入流）

InputStreamin=DBUtil.class.getClassLoader().getResourceAsStream("perties");

//通過(guò)load()方法將數(shù)日六的內(nèi)容加載到配置文件對(duì)象中

properties.load(in);

//通過(guò)配置文件對(duì)象的getProperty()方法獲取驅(qū)動(dòng)名，拿到驅(qū)動(dòng)名之后加載驅(qū)動(dòng)

Class.forName(properties.getProperty("jdbcName"));

}catch(Exceptione){

e.printStackTrace();

2：獲取數(shù)據(jù)庫(kù)連接：

*獲取數(shù)據(jù)庫(kù)連接

*@return

publicstaticConnectiongetConnection(){

Connectionconnection=null;

try{

//得到數(shù)據(jù)庫(kù)鏈接的相關(guān)性息

StringdbUrl=properties.getProperty("dbUrl");

StringdbName=properties.getProperty("dbName");

StringdbPwd=properties.getProperty("dbPwd");

connection=DriverManager.getConnection(dbUrl,dbName,dbPwd);

}catch(SQLExceptionthrowables){

throwables.printStackTrace();

returnconnection;

3：關(guān)閉資源：

*關(guān)閉資源

*@paramresultSet

*@parampreparedStatement

*@paramconnection

publicstaticvoidclose(ResultSetresultSet,

PreparedStatementpreparedStatement,

Connectionconnection){

//判斷資源對(duì)象如果不為空則關(guān)閉

try{

if(resultSet!=null){

resultSet.close();

if(preparedStatement!=null){

preparedStatement.close();

if(connection!=null){

connection.close();

}catch(SQLExceptionthrowables){

throwables.printStackTrace();

DBUtil類全部代碼：

packagecom.ftzlovedsj.util;

importjava.io.IOException;

importjava.io.InputStream;

importjava.sql.*;

importjava.util.Properties;

*@author${范濤之}

*@Description

*@create2025-11-1419:02

publicclassDBUtil{

*得到配置文件對(duì)象

privatestaticPropertiesproperties=newProperties();

static{

try{

//加載配置文件（輸入流）

InputStreamin=DBUtil.class.getClassLoader().getResourceAsStream("perties");

//通過(guò)load()方法將數(shù)日六的內(nèi)容加載到配置文件對(duì)象中

properties.load(in);

//通過(guò)配置文件對(duì)象的getProperty()方法獲取驅(qū)動(dòng)名，拿到驅(qū)動(dòng)名之后加載驅(qū)動(dòng)

Class.forName(properties.getProperty("jdbcName"));

}catch(Exceptione){

e.printStackTrace();

*獲取數(shù)據(jù)庫(kù)連接

*@return

publicstaticConnectiongetConnection(){

Connectionconnection=null;

try{

//得到數(shù)據(jù)庫(kù)鏈接的相關(guān)性息

StringdbUrl=properties.getProperty("dbUrl");

StringdbName=properties.getProperty("dbName");

StringdbPwd=properties.getProperty("dbPwd");

connection=DriverManager.getConnection(dbUrl,dbName,dbPwd);

}catch(SQLExceptionthrowables){

throwables.printStackTrace();

returnconnection;

*關(guān)閉資源

*@paramresultSet

*@parampreparedStatement

*@paramconnection

publicstaticvoidclose(ResultSetresultSet,

PreparedStatementpreparedStatement,

Connectionconnection){

//判斷資源對(duì)象如果不為空則關(guān)閉

try{

if(resultSet!=null){