customize error page, update readme

Raysmond · Raysmond · commit 421ded7f41c0 · 2015-09-27T18:02:37.000+08:00
diff --git a/README.md b/README.md
@@ -15,12 +15,29 @@ SpringBlog is powered by many powerful frameworks and third-party projects:
 - [Pygments](http://pygments.org/) - Python syntax highlighter
 - [Jade4j](https://github.com/neuland/jade4j) - [Jade](http://jade-lang.com/) is an elegant template language
 - [Webjars](http://www.webjars.org/) - A client-side web libraries packaged into JAR files. A easy way to manage JavaScript and CSS vendors in Gradle.
+- [Redis](http://redis.io/) - A very powerful in-memory data cache server.
 
 ## Development
 
-Make sure Gradle is installed in your machine. Try `gradle -v` command. Otherwise install in from [http://www.gradle.org/](http://www.gradle.org/).
+Before development, please install the following service software:
 
-Before development, please install MySQL5+ first and edit `persistence.properties` according to your database configurations.
+- MySQL5
+    - Configuration file: `src/main/java/persistence.properties`
+- Redis
+    - [how-to-install-and-use-redis-on-ubuntu](https://www.digitalocean.com/community/tutorials/how-to-install-and-use-redis)
+    - Configuration file: `src/main/java/redis.properties`
+
+And start MySQL and Redis server before running the application.
+
+```
+# If you're using Ubuntu server
+sudo service mysql start
+sudo service redis_6379 start
+```
+
+This is a Gradle project. Make sure Gradle is installed in your machine.
+Try `gradle -v` command. Otherwise install in from [http://www.gradle.org/](http://www.gradle.org/).
+I recommend you import the source code into Intellij IDE to edit the code.
 
 ```
 # Install artifacts to your local repository
@@ -30,4 +47,4 @@ Before development, please install MySQL5+ first and edit `persistence.propertie
 ./gradlew jettyRun
 ```
 
-View `http://localhost:8080/SpringBlog` on your browser.
+View `http://localhost:8080/` on your browser.
diff --git a/build.gradle b/build.gradle
@@ -127,6 +127,6 @@ buildscript {
 // It will cause "No Spring WebApplicationInitializer types detected on classpath"
 gretty {
     port = 8080
-    contextPath = 'SpringBlog'
+    contextPath = ''
     servletContainer = 'jetty9' //tomcat7 or tomcat8
 }
diff --git a/src/main/java/com/raysmond/blog/controllers/PostController.java b/src/main/java/com/raysmond/blog/controllers/PostController.java
@@ -1,5 +1,6 @@
 package com.raysmond.blog.controllers;
 
+import com.raysmond.blog.error.NotFoundException;
 import com.raysmond.blog.models.Post;
 import com.raysmond.blog.models.support.PostType;
 import com.raysmond.blog.repositories.PostRepository;
@@ -36,6 +37,10 @@ public String archive(Model model){
     @RequestMapping(value = "{postId:[0-9]+}")
     public String show(@PathVariable Long postId, Model model){
         Post post = postService.getPost(postId);
+
+        if(post == null){
+            throw new NotFoundException();
+        }
         model.addAttribute("post", post);
         return "posts/show";
     }
diff --git a/src/main/java/com/raysmond/blog/error/CustomErrorController.java b/src/main/java/com/raysmond/blog/error/CustomErrorController.java
@@ -30,12 +30,10 @@ public String generalError(HttpServletRequest request, HttpServletResponse respo
 		if (requestUri == null) {
 			requestUri = "Unknown";
 		}
-		
-		String message = MessageFormat.format("{0} returned for {1} with message {2}", 
-			statusCode, requestUri, exceptionMessage
-		); 
-		
-		model.addAttribute("errorMessage", message);
+
+		model.addAttribute("statusCode", statusCode);
+		model.addAttribute("requestUri", requestUri);
+		model.addAttribute("exceptionMessage", exceptionMessage);
         return "error/general";
 	}
 
diff --git a/src/main/java/com/raysmond/blog/error/NotFoundException.java b/src/main/java/com/raysmond/blog/error/NotFoundException.java
@@ -0,0 +1,12 @@
+package com.raysmond.blog.error;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+/**
+ * Created by Raysmond on 9/27/15.
+ */
+@ResponseStatus(value = HttpStatus.NOT_FOUND)
+public final class NotFoundException extends RuntimeException {
+
+}
diff --git a/src/main/webapp/views/error/general.html b/src/main/webapp/views/error/general.html
diff --git a/src/main/webapp/views/error/general.jade b/src/main/webapp/views/error/general.jade
@@ -0,0 +1,10 @@
+extends ../layout/app 
+
+block title 
+  | Error 
+  = statusCode
+
+block page_title  
+  h1 #{statusCode} #{exceptionMessage}
+  p Request page: #{requestUri}
+  p #{message}
diff --git a/src/main/webapp/views/fragments/alert.html b/src/main/webapp/views/fragments/alert.html

Original file line number	Diff line number	Diff line change
`@@ -127,6 +127,6 @@ buildscript {`
`127`	`127`	`// It will cause "No Spring WebApplicationInitializer types detected on classpath"`
`128`	`128`	`gretty {`
`129`	`129`	`port = 8080`
`130`		`- contextPath = 'SpringBlog'`
	`130`	`+ contextPath = ''`
`131`	`131`	`servletContainer = 'jetty9' //tomcat7 or tomcat8`
`132`	`132`	`}`