IDEA创建JSP项目 |
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IDEA创建JSP项目
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首先创建一个项目： 选择 Web Application 项目名称： 然后点击Finish 创建好后如下： 到项目中去设置一下 新建一个lib文件夹 然后到这里把lib文件夹选上： 选上 把lib作为jar包目录 在勾上： 有时候，这里没有自动创建项目，这时就需要我们手动去创建（已创建请跳过）
然后选上我们的Test项目： 这里有时候也没有创建（已创建请跳过） 手动创建如下：
也是选择Test项目 然后点ok 然后配置Tomcat 服务器 如下： 添加后如下： 基本设置如下： 创建：
说明：此处的/test 是项目在 服务器的 路径即：localhost:8080/test就是我们服务器主页的路径 然后点ok 会自动创建如下： 然后我们开始码代码 把jar包放进来 mysql jar包 EL jar包 JSTL jar包 然后创建几个包，分别是dao、model、servlet、test 目录结构： 由于太刺眼了 故换成了黑色主题… 创建了一个BaseDao类 package dao; import java.sql.*; public class BaseDao { public Connection getCN8() throws SQLException, ClassNotFoundException { Class.forName("com.mysql.cj.jdbc.Driver"); return DriverManager.getConnection("jdbc:mysql://localhost:3306/sakila" + "?useSSL=false&useUnicode=true&characterEncoding=utf-8&serverTimezone=UTC", "root", "123456"); } public void closeAll(Connection cn, Statement st, ResultSet rs) { if (cn != null) { try { cn.close(); } catch (SQLException e) { e.printStackTrace(); } } if (st != null) { try { st.close(); } catch (SQLException e) { e.printStackTrace(); } } if (rs != null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } } }然后创建了一个test类 package test; import dao.BaseDao; import java.sql.Connection; import java.sql.SQLException; public class Test { public static void main(String[] args) { BaseDao b = new BaseDao(); Connection cn = null; try { cn = b.getCN8(); if (cn != null) { System.out.println("yes"); } } catch (SQLException e) { e.printStackTrace(); } catch (ClassNotFoundException e) { e.printStackTrace(); } finally { b.closeAll(cn, null, null); } } }然后右击运行： 好吧，它报错了… 这里打错了 应该是 server ，而不是service 该过来以后就正确了 然后我们把sakila数据库中film表中的数据查出来 把字段 改成 类中的属性 如下： 然后依次创建构造方法、get、set 、equals、hashcode、toStirng方法 打开这个菜单的快捷键是 Alte + Insert 现在的目录结构如下： Film类 package model; import java.io.Serializable; import java.util.Objects; public class Film implements Serializable { private String filmId,title,description,releaseYear,languageId,originalLanguageId,rentalDuration,rentalRate ,length,replacementCost,rating,specialFeatures,lastUpdate; public Film() { } public Film(String title, String description, String releaseYear, String languageId, String originalLanguageId, String rentalDuration, String rentalRate, String length, String replacementCost, String rating, String specialFeatures, String lastUpdate) { this.title = title; this.description = description; this.releaseYear = releaseYear; this.languageId = languageId; this.originalLanguageId = originalLanguageId; this.rentalDuration = rentalDuration; this.rentalRate = rentalRate; this.length = length; this.replacementCost = replacementCost; this.rating = rating; this.specialFeatures = specialFeatures; this.lastUpdate = lastUpdate; } public Film(String filmId, String title, String description, String releaseYear, String languageId, String originalLanguageId, String rentalDuration, String rentalRate, String length, String replacementCost, String rating, String specialFeatures, String lastUpdate) { this.filmId = filmId; this.title = title; this.description = description; this.releaseYear = releaseYear; this.languageId = languageId; this.originalLanguageId = originalLanguageId; this.rentalDuration = rentalDuration; this.rentalRate = rentalRate; this.length = length; this.replacementCost = replacementCost; this.rating = rating; this.specialFeatures = specialFeatures; this.lastUpdate = lastUpdate; } public String getFilmId() { return filmId; } public Film setFilmId(String filmId) { this.filmId = filmId; return this; } public String getTitle() { return title; } public Film setTitle(String title) { this.title = title; return this; } public String getDescription() { return description; } public Film setDescription(String description) { this.description = description; return this; } public String getReleaseYear() { return releaseYear; } public Film setReleaseYear(String releaseYear) { this.releaseYear = releaseYear; return this; } public String getLanguageId() { return languageId; } public Film setLanguageId(String languageId) { this.languageId = languageId; return this; } public String getOriginalLanguageId() { return originalLanguageId; } public Film setOriginalLanguageId(String originalLanguageId) { this.originalLanguageId = originalLanguageId; return this; } public String getRentalDuration() { return rentalDuration; } public Film setRentalDuration(String rentalDuration) { this.rentalDuration = rentalDuration; return this; } public String getRentalRate() { return rentalRate; } public Film setRentalRate(String rentalRate) { this.rentalRate = rentalRate; return this; } public String getLength() { return length; } public Film setLength(String length) { this.length = length; return this; } public String getReplacementCost() { return replacementCost; } public Film setReplacementCost(String replacementCost) { this.replacementCost = replacementCost; return this; } public String getRating() { return rating; } public Film setRating(String rating) { this.rating = rating; return this; } public String getSpecialFeatures() { return specialFeatures; } public Film setSpecialFeatures(String specialFeatures) { this.specialFeatures = specialFeatures; return this; } public String getLastUpdate() { return lastUpdate; } public Film setLastUpdate(String lastUpdate) { this.lastUpdate = lastUpdate; return this; } @Override public boolean equals(Object o) { if (this == o) return true; if (!(o instanceof Film)) return false; Film film = (Film) o; return Objects.equals(getFilmId(), film.getFilmId()) && Objects.equals(getTitle(), film.getTitle()) && Objects.equals(getDescription(), film.getDescription()) && Objects.equals(getReleaseYear(), film.getReleaseYear()) && Objects.equals(getLanguageId(), film.getLanguageId()) && Objects.equals(getOriginalLanguageId(), film.getOriginalLanguageId()) && Objects.equals(getRentalDuration(), film.getRentalDuration()) && Objects.equals(getRentalRate(), film.getRentalRate()) && Objects.equals(getLength(), film.getLength()) && Objects.equals(getReplacementCost(), film.getReplacementCost()) && Objects.equals(getRating(), film.getRating()) && Objects.equals(getSpecialFeatures(), film.getSpecialFeatures()) && Objects.equals(getLastUpdate(), film.getLastUpdate()); } @Override public int hashCode() { return Objects.hash(getFilmId(), getTitle(), getDescription(), getReleaseYear(), getLanguageId(), getOriginalLanguageId(), getRentalDuration(), getRentalRate(), getLength(), getReplacementCost(), getRating(), getSpecialFeatures(), getLastUpdate()); } @Override public String toString() { return "" + filmId + "" + title + "" + description + "" + releaseYear + "" + languageId + "" + originalLanguageId + "" + rentalDuration + "" + rentalRate + "" + length + "" + replacementCost + "" + rating + "" + specialFeatures + "" + lastUpdate + ""; } }然后再创建一个IFilmDao接口 FilmImpl类 然后我们测试一下
然后我们可以看到，1000条数据已经出来了 接下来就是显示到网页上的事了 写个servlet
然后把bootstrap也丢进来 网页： 显示 电影编号 电影名称 简介 发布年份 语言 原始语言 租赁期限 租金率 长度 重置成功 评级 特殊功能 最后一次更新 ${f.toString()}在浏览器中输入：http://localhost:8080/test/showfilm就可以看到jsp页面了 结果： |
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