一、異常錯(cuò)誤

Springboot使用thymeleaf，并連接遠(yuǎn)程數(shù)據(jù)庫啟動(dòng)時(shí)，無法加載resources中的靜態(tài)資源

瀏覽器報(bào)錯(cuò)

Failed to load resource: the server responded with a status of 404 ()

后端啟動(dòng)時(shí)報(bào)錯(cuò)

Servlet.service() for servlet [dispatcherServlet] in context with path [/ce] threw exception [Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateInputException: Error resolving template 

前端打開頁面時(shí)后端報(bào)錯(cuò)

Exception processing template "/web/studyOutline/studyOutline": Error resolving template [/web/studyOutline/studyOutline], template might not exist or might not be accessible by any of the configured Template Resolvers

二、原因

打包編譯項(xiàng)目，顯示找不到j(luò)s、css、html等靜態(tài)資源，但本地路徑并沒有寫錯(cuò)，于是我去找編譯文件，查看是不是靜態(tài)資源沒有編譯到，打開項(xiàng)目下的target文件夾

前往classes文件夾，發(fā)現(xiàn)項(xiàng)目resources下對(duì)應(yīng)的templates韋文件夾沒有編譯到，缺少靜態(tài)資源，當(dāng)然會(huì)報(bào)錯(cuò)了

三、解決方法

方法1. 將無法編譯的靜態(tài)資源放入可編譯目錄下

既然服務(wù)器不能編譯templates文件夾，那么把templates文件夾放入calsses路徑下即可，這樣處理就能獲取templats下的靜態(tài)資源了，但如果靜態(tài)資源有改動(dòng)，需要手動(dòng)放入classes文件夾下，再次啟動(dòng)項(xiàng)目即可讀取資源

如果再次啟動(dòng)項(xiàng)目，還是顯示找不到j(luò)s、css、html等靜態(tài)資源，請(qǐng)看方法2

方法2. 重新編譯項(xiàng)目加載資源

由于服務(wù)器編譯攔截了靜態(tài)資源，導(dǎo)致出現(xiàn)異常，需要重新打包編譯

打開IDEA帶的Maven管理，雙擊clean清除由項(xiàng)目編譯創(chuàng)建的target

再雙擊install安裝jar包到本地倉庫

項(xiàng)目打包出現(xiàn)異常

[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Using 'UTF-8' encoding to copy filtered properties files.

系統(tǒng)默認(rèn)編碼是GBK，maven提升需要使用UTF-8，在setting中修改項(xiàng)目編碼為UTF-8

出現(xiàn) Failed to execute goal是由于測(cè)試用例有問題，

 Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources (default-test) on project springboot_04_profile: Input length = 1 -> [Help 1]

選擇跳過測(cè)試用例

再次雙擊install，編譯成功，啟動(dòng)項(xiàng)目即可讀取靜態(tài)資源

如果設(shè)置編碼還是打包失敗，或者顯示找不到j(luò)s、css、html等靜態(tài)資源，請(qǐng)看方法3

方法3. 修改pom.xml資源配置文件

如果設(shè)置編碼還是打包失敗，或者顯示找不到j(luò)s、css、html等靜態(tài)資源，說明服務(wù)器沒有訪問資源的權(quán)限，需要在pom.xml的build下引入資源文件

<!--           引入靜態(tài)資源文件   --><resources><resource><directory>src/main/resources</directory><includes><include>**/*.css</include><include>**/*.js</include><include>**/*.html</include><include>**/*.png</include><include>**/*.properties</include><include>**/*.yml</include><include>**/*.xml</include><include>**/*.conf</include></includes></resource></resources>

再次insall，顯示打包成功，瀏覽器404的問題也解決了，加載了靜態(tài)資源

方法4. 不連接遠(yuǎn)程數(shù)據(jù)庫啟動(dòng)，使用本地?cái)?shù)據(jù)庫

開頭說了，Springboot使用thymeleaf，并連接遠(yuǎn)程數(shù)據(jù)庫啟動(dòng)時(shí)，無法加載resources中的靜態(tài)資源，這是一個(gè)大坑，如果不連接遠(yuǎn)程數(shù)據(jù)庫啟動(dòng)，則不存在服務(wù)器訪問資源的問題

打開application.properties配置文件，注釋掉連接遠(yuǎn)程數(shù)據(jù)庫的代碼，改用本地?cái)?shù)據(jù)庫，就不會(huì)有訪問資源的問題了，可以直接加載，瀏覽器不再出現(xiàn)Failed to load resource問題

異常索引

• Failed to load resource: the server responded with a status of 404 ()
• Servlet.service() for servlet [dispatcherServlet] in context with path [/ce] threw exception [Request processing failed; nested
  exception is org.thymeleaf.exceptions.TemplateInputException: Error
  resolving template
• Exception processing template “/web/studyOutline/studyOutline”: Error resolving template [/web/studyOutline/studyOutline], template
  might not exist or might not be accessible by any of the configured
  Template Resolvers
• [INFO] Using ‘UTF-8’ encoding to copy filtered resources. [INFO] Using ‘UTF-8’ encoding to copy filtered properties files.
• Failed to execute goal org.apache.maven.plugins:maven-resources-plugin:3.2.0:resources
  (default-test) on project springboot_04_profile: Input length = 1 ->
  [Help 1]