├── .gitignore ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── README.md ├── src └── main │ └── java │ └── com │ └── rcoedo │ ├── model │ ├── domain │ │ └── User.java │ └── services │ │ ├── UserService.java │ │ └── UserServiceImpl.java │ ├── config │ ├── RootContextConfig.java │ ├── DispatcherContextConfig.java │ └── handlers │ │ └── ObservableReturnValueHandler.java │ ├── controller │ └── UserController.java │ └── Application.java ├── gradlew.bat └── gradlew /.gitignore: -------------------------------------------------------------------------------- 1 | .idea 2 | build 3 | .gradle 4 | *.iml 5 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/rcoedo/rxjava-spring-mvc/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # rxjava-spring-mvc 2 | 3 | This is a small Spring MVC application using RxJava. 4 | 5 | The service layer returns RxJava's `Observable`. 6 | 7 | Controllers can convert RxJava's `Observable` to `DeferredResult`, handling requests asynchronously. 8 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/model/domain/User.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.model.domain; 2 | 3 | import lombok.AllArgsConstructor; 4 | import lombok.Value; 5 | 6 | @Value 7 | @AllArgsConstructor 8 | public class User { 9 | private String name; 10 | } 11 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/model/services/UserService.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.model.services; 2 | 3 | import rx.Observable; 4 | 5 | import com.rcoedo.model.domain.User; 6 | 7 | public interface UserService { 8 | Observable getUsers(); 9 | } 10 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Wed Feb 10 22:26:58 CET 2016 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-2.5-all.zip 7 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/config/RootContextConfig.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.config; 2 | 3 | import org.springframework.context.annotation.ComponentScan; 4 | import org.springframework.context.annotation.Configuration; 5 | 6 | @Configuration 7 | @ComponentScan(basePackages = "com.rcoedo.model") 8 | public class RootContextConfig {} 9 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/model/services/UserServiceImpl.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.model.services; 2 | 3 | import org.springframework.stereotype.Service; 4 | 5 | import rx.Observable; 6 | 7 | import com.rcoedo.model.domain.User; 8 | 9 | @Service 10 | public class UserServiceImpl implements UserService { 11 | @Override 12 | public Observable getUsers() { 13 | return Observable.just(new User("Roman Coedo")); 14 | } 15 | } 16 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/controller/UserController.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.controller; 2 | 3 | import java.util.List; 4 | 5 | import org.springframework.beans.factory.annotation.Autowired; 6 | import org.springframework.web.bind.annotation.RequestMapping; 7 | import org.springframework.web.bind.annotation.RestController; 8 | 9 | import rx.Observable; 10 | 11 | import com.rcoedo.model.domain.User; 12 | import com.rcoedo.model.services.UserService; 13 | 14 | @RestController 15 | public class UserController { 16 | 17 | private final UserService userService; 18 | 19 | @Autowired 20 | public UserController(UserService userService) { 21 | this.userService = userService; 22 | } 23 | 24 | @RequestMapping("/users") 25 | public Observable> getUsers() { 26 | return userService.getUsers().toList(); 27 | } 28 | 29 | @RequestMapping("/") 30 | public String home() { 31 | return "No place like home"; 32 | } 33 | 34 | } 35 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/config/DispatcherContextConfig.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.config; 2 | 3 | import java.text.SimpleDateFormat; 4 | import java.util.List; 5 | 6 | import org.springframework.context.annotation.ComponentScan; 7 | import org.springframework.context.annotation.Configuration; 8 | import org.springframework.http.converter.HttpMessageConverter; 9 | import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; 10 | import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter; 11 | import org.springframework.web.method.support.HandlerMethodReturnValueHandler; 12 | import org.springframework.web.servlet.config.annotation.EnableWebMvc; 13 | import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; 14 | import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; 15 | 16 | import com.rcoedo.config.handlers.ObservableReturnValueHandler; 17 | 18 | @EnableWebMvc 19 | @Configuration 20 | @ComponentScan(basePackages = {"com.rcoedo.controller"}) 21 | public class DispatcherContextConfig extends WebMvcConfigurerAdapter { 22 | @Override 23 | public void addResourceHandlers(ResourceHandlerRegistry registry) { 24 | registry.addResourceHandler("/resources/**").addResourceLocations("static"); 25 | } 26 | 27 | @Override 28 | public void addReturnValueHandlers(List returnValueHandlers) { 29 | returnValueHandlers.add(new ObservableReturnValueHandler()); 30 | } 31 | 32 | @Override 33 | public void configureMessageConverters(List> converters) { 34 | Jackson2ObjectMapperBuilder builder = new Jackson2ObjectMapperBuilder(); 35 | builder.indentOutput(true).dateFormat(new SimpleDateFormat("yyyy-MM-dd")); 36 | converters.add(new MappingJackson2HttpMessageConverter(builder.build())); 37 | } 38 | } 39 | -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/config/handlers/ObservableReturnValueHandler.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo.config.handlers; 2 | 3 | import org.springframework.core.MethodParameter; 4 | import org.springframework.web.context.request.NativeWebRequest; 5 | import org.springframework.web.context.request.async.DeferredResult; 6 | import org.springframework.web.context.request.async.WebAsyncUtils; 7 | import org.springframework.web.method.support.AsyncHandlerMethodReturnValueHandler; 8 | import org.springframework.web.method.support.ModelAndViewContainer; 9 | 10 | import rx.Observable; 11 | 12 | public class ObservableReturnValueHandler implements AsyncHandlerMethodReturnValueHandler { 13 | 14 | @Override 15 | public boolean isAsyncReturnValue(Object returnValue, MethodParameter returnType) { 16 | return returnValue != null && supportsReturnType(returnType); 17 | } 18 | 19 | @Override 20 | public boolean supportsReturnType(MethodParameter returnType) { 21 | return Observable.class.isAssignableFrom(returnType.getParameterType()); 22 | } 23 | 24 | @Override 25 | public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, 26 | NativeWebRequest webRequest) throws Exception { 27 | 28 | if (returnValue == null) { 29 | mavContainer.setRequestHandled(true); 30 | return; 31 | } 32 | 33 | final Observable observable = Observable.class.cast(returnValue); 34 | WebAsyncUtils.getAsyncManager(webRequest) 35 | .startDeferredResultProcessing(new ObservableAdapter<>(observable), mavContainer); 36 | } 37 | 38 | public class ObservableAdapter extends DeferredResult { 39 | public ObservableAdapter(Observable observable) { 40 | observable.subscribe(this::setResult, this::setErrorResult); 41 | } 42 | } 43 | } -------------------------------------------------------------------------------- /src/main/java/com/rcoedo/Application.java: -------------------------------------------------------------------------------- 1 | package com.rcoedo; 2 | 3 | import javax.servlet.ServletContext; 4 | import javax.servlet.ServletException; 5 | import javax.servlet.ServletRegistration; 6 | 7 | import org.springframework.web.WebApplicationInitializer; 8 | import org.springframework.web.context.ContextLoaderListener; 9 | import org.springframework.web.context.WebApplicationContext; 10 | import org.springframework.web.context.support.AnnotationConfigWebApplicationContext; 11 | import org.springframework.web.servlet.DispatcherServlet; 12 | 13 | import com.rcoedo.config.DispatcherContextConfig; 14 | import com.rcoedo.config.RootContextConfig; 15 | 16 | public class Application implements WebApplicationInitializer { 17 | @Override 18 | public void onStartup(ServletContext servletContext) throws ServletException { 19 | // Create the root application context 20 | WebApplicationContext rootContext = getContext(RootContextConfig.class); 21 | 22 | // Load the root application context with the servlet context 23 | servletContext.addListener(new ContextLoaderListener(rootContext)); 24 | 25 | // Create the dispatcher servlet's application context 26 | WebApplicationContext dispatcherContext = getContext(DispatcherContextConfig.class); 27 | 28 | // Create and register the dispatcher servlet in the servlet context using the dispatcher servlet's application context 29 | ServletRegistration.Dynamic dispatcherServlet = servletContext.addServlet("dispatcher", new DispatcherServlet(dispatcherContext)); 30 | 31 | // Configure the dispatcher servlet 32 | dispatcherServlet.setLoadOnStartup(1); 33 | dispatcherServlet.setAsyncSupported(true); 34 | dispatcherServlet.addMapping("/"); 35 | } 36 | 37 | private AnnotationConfigWebApplicationContext getContext(Class config) { 38 | AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext(); 39 | context.register(config); 40 | return context; 41 | } 42 | } 43 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 12 | set DEFAULT_JVM_OPTS= 13 | 14 | set DIRNAME=%~dp0 15 | if "%DIRNAME%" == "" set DIRNAME=. 16 | set APP_BASE_NAME=%~n0 17 | set APP_HOME=%DIRNAME% 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windowz variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | if "%@eval[2+2]" == "4" goto 4NT_args 53 | 54 | :win9xME_args 55 | @rem Slurp the command line arguments. 56 | set CMD_LINE_ARGS= 57 | set _SKIP=2 58 | 59 | :win9xME_args_slurp 60 | if "x%~1" == "x" goto execute 61 | 62 | set CMD_LINE_ARGS=%* 63 | goto execute 64 | 65 | :4NT_args 66 | @rem Get arguments from the 4NT Shell from JP Software 67 | set CMD_LINE_ARGS=%$ 68 | 69 | :execute 70 | @rem Setup the command line 71 | 72 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 73 | 74 | @rem Execute Gradle 75 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 76 | 77 | :end 78 | @rem End local scope for the variables with windows NT shell 79 | if "%ERRORLEVEL%"=="0" goto mainEnd 80 | 81 | :fail 82 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 83 | rem the _cmd.exe /c_ return code! 84 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 85 | exit /b 1 86 | 87 | :mainEnd 88 | if "%OS%"=="Windows_NT" endlocal 89 | 90 | :omega 91 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env bash 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 10 | DEFAULT_JVM_OPTS="" 11 | 12 | APP_NAME="Gradle" 13 | APP_BASE_NAME=`basename "$0"` 14 | 15 | # Use the maximum available, or set MAX_FD != -1 to use that value. 16 | MAX_FD="maximum" 17 | 18 | warn ( ) { 19 | echo "$*" 20 | } 21 | 22 | die ( ) { 23 | echo 24 | echo "$*" 25 | echo 26 | exit 1 27 | } 28 | 29 | # OS specific support (must be 'true' or 'false'). 30 | cygwin=false 31 | msys=false 32 | darwin=false 33 | case "`uname`" in 34 | CYGWIN* ) 35 | cygwin=true 36 | ;; 37 | Darwin* ) 38 | darwin=true 39 | ;; 40 | MINGW* ) 41 | msys=true 42 | ;; 43 | esac 44 | 45 | # For Cygwin, ensure paths are in UNIX format before anything is touched. 46 | if $cygwin ; then 47 | [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 48 | fi 49 | 50 | # Attempt to set APP_HOME 51 | # Resolve links: $0 may be a link 52 | PRG="$0" 53 | # Need this for relative symlinks. 54 | while [ -h "$PRG" ] ; do 55 | ls=`ls -ld "$PRG"` 56 | link=`expr "$ls" : '.*-> \(.*\)$'` 57 | if expr "$link" : '/.*' > /dev/null; then 58 | PRG="$link" 59 | else 60 | PRG=`dirname "$PRG"`"/$link" 61 | fi 62 | done 63 | SAVED="`pwd`" 64 | cd "`dirname \"$PRG\"`/" >&- 65 | APP_HOME="`pwd -P`" 66 | cd "$SAVED" >&- 67 | 68 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 69 | 70 | # Determine the Java command to use to start the JVM. 71 | if [ -n "$JAVA_HOME" ] ; then 72 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 73 | # IBM's JDK on AIX uses strange locations for the executables 74 | JAVACMD="$JAVA_HOME/jre/sh/java" 75 | else 76 | JAVACMD="$JAVA_HOME/bin/java" 77 | fi 78 | if [ ! -x "$JAVACMD" ] ; then 79 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 80 | 81 | Please set the JAVA_HOME variable in your environment to match the 82 | location of your Java installation." 83 | fi 84 | else 85 | JAVACMD="java" 86 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 87 | 88 | Please set the JAVA_HOME variable in your environment to match the 89 | location of your Java installation." 90 | fi 91 | 92 | # Increase the maximum file descriptors if we can. 93 | if [ "$cygwin" = "false" -a "$darwin" = "false" ] ; then 94 | MAX_FD_LIMIT=`ulimit -H -n` 95 | if [ $? -eq 0 ] ; then 96 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 97 | MAX_FD="$MAX_FD_LIMIT" 98 | fi 99 | ulimit -n $MAX_FD 100 | if [ $? -ne 0 ] ; then 101 | warn "Could not set maximum file descriptor limit: $MAX_FD" 102 | fi 103 | else 104 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 105 | fi 106 | fi 107 | 108 | # For Darwin, add options to specify how the application appears in the dock 109 | if $darwin; then 110 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 111 | fi 112 | 113 | # For Cygwin, switch paths to Windows format before running java 114 | if $cygwin ; then 115 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 116 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Split up the JVM_OPTS And GRADLE_OPTS values into an array, following the shell quoting and substitution rules 158 | function splitJvmOpts() { 159 | JVM_OPTS=("$@") 160 | } 161 | eval splitJvmOpts $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 162 | JVM_OPTS[${#JVM_OPTS[*]}]="-Dorg.gradle.appname=$APP_BASE_NAME" 163 | 164 | exec "$JAVACMD" "${JVM_OPTS[@]}" -classpath "$CLASSPATH" org.gradle.wrapper.GradleWrapperMain "$@" 165 | --------------------------------------------------------------------------------