springboot欏圭洰鎼緩閬囧埌闂錛屾彁渚涗袱縐嶈В鍐蟲柟娉曪細(xì)
“Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.”
琛ㄧず娌℃湁鎸囧畾鐨勬暟鎹簱url錛屾棤娉曢厤緗暟鎹簱
image.png
鏂規(guī)硶涓錛氫笉浣跨敤鏁版嵁婧愰厤緗?/h4>
鎴戜滑鍙互鍦⊿pring Boot欏圭洰鍏ュ彛娉ㄨВ澶勬坊鍔?exclude= {DataSourceAutoConfiguration.class}錛岃〃紺哄彇娑堟暟鎹簮鐨勮嚜鍔ㄩ厤緗?/p>
濡傦細(xì)
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; /** * 琛ㄧず鍙栨秷鏁版嵁婧愮殑鑷姩閰嶇疆 */ @SpringBootApplication(exclude= {DataSourceAutoConfiguration.class}) public class SpringbootWeb01Application { public static void main(String[] args) { SpringApplication.run(SpringbootWeb01Application.class, args); } } 鏂規(guī)硶浜岋細(xì)鎸夌収鎶ラ敊錛屾垜浠坊鍔犳暟鎹簱閰嶇疆
鎴戜滑闇瑕乤pplication.yml鏂囦歡涓嬫坊鍔犲涓嬮厤緗?/p>
server: port: 8080 spring: datasource: url: jdbc:mysql://localhost:3306/springboottest driver-class-name: com.mysql.cj.jdbc.Driver password: 88888888 username: jiade 浣滆咃細(xì)紼嬪簭鍛樻邯璦
閾炬帴錛歨ttps://www.jianshu.com/p/54db85befb01
鏉ユ簮錛氱畝涔?br />钁椾綔鏉冨綊浣滆呮墍鏈夈傚晢涓氳漿杞借鑱旂郴浣滆呰幏寰楁巿鏉冿紝闈炲晢涓氳漿杞借娉ㄦ槑鍑哄銆?/div>
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<META HTTP-EQUIV="Refresh" CONTENT="0;URL=/example/hello.action">
</head>
2.
<jsp:forward page="/prosceniumAction.do?action=toIndex"></jsp:forward>
<%@ include file="/commons/taglibs.jsp"%>
]]>
import java.io.*;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import freemarker.template.*;
public class MakeHtmlFile {
private final Log logger = LogFactory.getLog(getClass());
private Configuration freemarkerCfg = null;
private String templatePath = "";
private String realBuildPath = "";
/**
*
* @param realBuildPath鏍圭洰褰曠粷瀵硅礬寰?
* @param templatePath妯℃澘鐩稿璺緞錛屼笉鍖呭惈妯℃澘鍚嶇О
*/
public MakeHtmlFile(String realBuildPath, String templatePath) {
this.templatePath = templatePath;
this.realBuildPath = realBuildPath;
setTemplatePath();
}
/**
*
* @param templatePath:妯℃澘緇濆璺緞
*/
private void setTemplatePath() {
// 璁劇疆freemarker鐨勫弬鏁?
freemarkerCfg = new Configuration();
try {
File file = new File(realBuildPath+templatePath);
freemarkerCfg
.setDirectoryForTemplateLoading(file);
freemarkerCfg.setObjectWrapper(new DefaultObjectWrapper());
freemarkerCfg.setDefaultEncoding("UTF-8");
} catch (IOException ex) {
System.out.println("No Directory found,please check you config."n"
+ realBuildPath+templatePath);
}
}
/**
* 鐢熸垚闈?rùn)鎬佹枃浠?
*
* @param templateFileName
* 妯＄増鍚嶇Оeg:(biz/order.ftl)
* @param propMap
* 鐢ㄤ簬澶勭悊妯℃澘鐨勫睘鎬bject鏄犲皠
* @param htmlFilePath
* 瑕佺敓鎴愮殑闈?rùn)鎬佹枃浠剁殑璺緞,鐩稿璁劇疆涓殑鏍硅礬寰?渚嬪 "/biz/2006/5/"
* @param htmlFileName
* 瑕佺敓鎴愮殑鏂囦歡鍚?渚嬪 "123.htm"
* @return
*/
public boolean buildHtml(String templateFileName, Map propMap,
String htmlFilePath, String htmlFileName) {
try {
Template template = freemarkerCfg.getTemplate(templateFileName);
template.setEncoding("UTF-8");
// 鍒涘緩鐢熸垚鏂囦歡鐩綍
creatDirs(realBuildPath, htmlFilePath);
File htmlFile = new File(realBuildPath + htmlFilePath
+ htmlFileName);
Writer out = new BufferedWriter(new OutputStreamWriter(
new FileOutputStream(htmlFile), "UTF-8"));
template.process(propMap, out);
out.flush();
return true;
} catch (TemplateException ex) {
ex.printStackTrace();
logger.error("Build Error" + templateFileName, ex);
return false;
} catch (IOException e) {
logger.error("Build Error" + templateFileName, e);
return false;
}
}
/**
* 鍒涘緩澶氱駭鐩綍
*
* @param aParentDir
* String
* @param aSubDir
* 浠? / 寮澶?
* @return boolean 鏄惁鎴愬姛
*/
public static boolean creatDirs(String aParentDir, String aSubDir) {
File aFile = new File(aParentDir);
if (aFile.exists()) {
File aSubFile = new File(aParentDir + aSubDir);
if (!aSubFile.exists()) {
return aSubFile.mkdirs();
} else {
return true;
}
} else {
return false;
}
}
}
鍒潃鎬ワ紝絳夋垜瀛︿細(xì)浜?jiǎn)锛屾垜涓姝ユ璇存槑涓浠涔堟剰鎬?
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鍦↗SP欏甸潰涓婂啓:
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/functions" prefix="fn"%>
1銆?寰幆鎺у埗鏍囩
<c:forEach>
<c:forEach>鏍囩鐢ㄤ簬閫氱敤鏁版嵁錛屽畠鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
items 榪涜寰幆鐨勯」鐩?鍚?鏃?
begin 寮濮嬫潯浠?鍚?0
end 緇撴潫鏉′歡 鍚?闆嗗悎涓殑鏈鍚庝竴涓」鐩?
step 姝ラ暱 鍚?1
var 浠ｈ〃褰撳墠欏圭洰鐨勫彉閲忓悕 鍚?鏃?
varStatus 鏄劇ず寰幆鐘舵佺殑鍙橀噺 瀹冪殑灞炴у寘鎷細(xì)index 褰撳墠ID錛宑ount 涓鍏辨湁澶氬皯鏁版嵁銆?br />
2銆佸驚鐜壒鍒鍙?br /> <c:forTokens>
<c:forTokens>鏍囩鏈変互涓嬪睘鎬?灞?鎬?鎻?榪?鏄惁蹇呴』 緙虹渷鍊?
items 榪涜寰幆鐨勯」鐩?鏄?鏃?
delims 鍒嗗壊絎?鏄?鏃?
begin 寮濮嬫潯浠?鍚?0
end 緇撴潫鏉′歡 鍚?闆嗗悎涓殑鏈鍚庝竴涓」鐩?
step 姝ラ暱 鍚?1
var 浠ｈ〃褰撳墠欏圭洰鐨勫彉閲忓悕 鍚?鏃?
varStatus 鏄劇ず寰幆鐘舵佺殑鍙橀噺 鍚?鏃?
3.鍒ゆ柇闆嗗悎涓嶄負(fù)絀?br />
${user}涓洪泦鍚?
<c:if test="${empty user}">
鏃犱俊鎭紒
</c:if>
<c:if test="${!empty user}">
鍏跺畠...
</c:if>
<c:if test="${empty user}">
鏃犱俊鎭紒
</c:if>
<c:if test="${!empty user}">
鍏跺畠...
</c:if>
]]>