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POCryptic pom.xml errors in a GWT/Maven project
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  1. POCryptic pom.xml errors in a GWT/Maven project
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    copied!<p>I am a relative newcomer to the Java world from .NET, so I sometimes struggle with things that must seem obvious to experienced Java developers, but this problem has stumped even some of my grizzled co-workers.</p> <p>Here's my environment:</p> <ul> <li>JavaSE 1.6</li> <li>Eclipse Indigo SP2</li> <li>m2e plugin 1.1.0.201205-30-0009</li> <li>Google Suite plugin 2.5.2</li> <li>GWT Maven plugin 2.4</li> <li>Spring 1.1</li> </ul> <p>The main project uses GWT 2.4.0 and compiles and works fine by itself. I also have a custom DB logging project in the same workspace which also builds without any errors. I need to use the custom DB logging functionality in the main web app, so I add the former to the latter as a dependency using Maven, and that's where things break.</p> <p>After rebuilding the workspace Eclipse shows three cryptic errors in the main project's pom.xml:</p> <pre><code>null (org.apache.maven.plugins:maven-war-plugin:2.1.1:exploded:default:compile) pom.xml /TestApp line 67 Maven Build Problem null (org.codehaus.mojo:gwt-maven-plugin:2.4.0:compile:default:prepare-package) pom.xml /TestApp line 44 Maven Build Problem null (org.codehaus.mojo:gwt-maven-plugin:2.4.0:generateAsync:default:generate-sources) pom.xml /TestApp line 44 Maven Build Problem </code></pre> <p>Scroll down to the end of my question to see the entire pom.xml. The offending dependency is called <code>net.cds.cps.dao.logger</code> and can be found at the bottom of the dependency list.</p> <p>When pom.xml is opened in Eclipse the two <code>&lt;execution&gt;</code> nodes of plugins <code>gwt-maven-plugin</code> and <code>maven-war-plugin</code> are highlighted.</p> <p>The usual troubleshooting steps (cleaning the projects, disabling/enabling Maven's workspace dependency resolution, updating project configuration) have no effect on the errors. Changing the dependency version from 1.0.0 to a more specific 1.0.0.43 or a more generic range [1.0.0.0, 1.0.1.0) has no effect either.</p> <p>Does anybody have any suggestions as to how I can go about troubleshooting this problem?</p> <pre><code>001 &lt;?xml version="1.0" encoding="UTF-8"?&gt; 002 &lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 003 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt; 004 005 &lt;!-- POM file generated with GWT webAppCreator --&gt; 006 &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt; 007 &lt;groupId&gt;net.test.app&lt;/groupId&gt; 008 &lt;artifactId&gt;TestApp&lt;/artifactId&gt; 009 &lt;packaging&gt;war&lt;/packaging&gt; 010 &lt;version&gt;1.0.0&lt;/version&gt; 011 &lt;name&gt;Test App&lt;/name&gt; 012 013 &lt;properties&gt; 014 &lt;!-- Convenience property to set the GWT version --&gt; 015 &lt;gwtVersion&gt;2.4.0&lt;/gwtVersion&gt; 016 &lt;!-- GWT needs at least java 1.5 --&gt; 017 &lt;webappDirectory&gt;${project.build.directory}/${project.build.finalName}&lt;/webappDirectory&gt; 018 &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt; 019 020 &lt;spring.version&gt;3.1.1.RELEASE&lt;/spring.version&gt; 021 &lt;final.name&gt;TestApp&lt;/final.name&gt; 022 &lt;/properties&gt; 023 024 &lt;build&gt; 025 &lt;resources&gt; 026 &lt;resource&gt; 027 &lt;filtering&gt;true&lt;/filtering&gt; 028 &lt;directory&gt;src/main/resources&lt;/directory&gt; 029 &lt;/resource&gt; 030 &lt;/resources&gt; 031 &lt;finalName&gt;${final.name}&lt;/finalName&gt; 032 033 &lt;!-- Generate compiled stuff in the folder used for developing mode --&gt; 034 &lt;outputDirectory&gt;${webappDirectory}/WEB-INF/classes&lt;/outputDirectory&gt; 035 036 &lt;plugins&gt; 037 038 &lt;!-- GWT Maven Plugin --&gt; 039 &lt;plugin&gt; 040 &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; 041 &lt;artifactId&gt;gwt-maven-plugin&lt;/artifactId&gt; 042 &lt;version&gt;2.4.0&lt;/version&gt; 043 &lt;executions&gt; 044 &lt;execution&gt; 045 &lt;goals&gt; 046 &lt;goal&gt;compile&lt;/goal&gt; 047 &lt;goal&gt;i18n&lt;/goal&gt; 048 &lt;goal&gt;generateAsync&lt;/goal&gt; 049 &lt;/goals&gt; 050 &lt;/execution&gt; 051 &lt;/executions&gt; 052 &lt;!-- Plugin configuration. There are many available options, see gwt-maven-plugin 053 documentation at codehaus.org --&gt; 054 &lt;configuration&gt; 055 &lt;runTarget&gt;Main.html&lt;/runTarget&gt; 056 &lt;hostedWebapp&gt;${webappDirectory}&lt;/hostedWebapp&gt; 057 &lt;i18nMessagesBundle&gt;net.cds.cps.cpcadmin.client.Messages&lt;/i18nMessagesBundle&gt; 058 &lt;/configuration&gt; 059 &lt;/plugin&gt; 060 061 &lt;!-- Copy static web files before executing gwt:run --&gt; 062 &lt;plugin&gt; 063 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; 064 &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt; 065 &lt;version&gt;2.1.1&lt;/version&gt; 066 &lt;executions&gt; 067 &lt;execution&gt; 068 &lt;phase&gt;compile&lt;/phase&gt; 069 &lt;goals&gt; 070 &lt;goal&gt;exploded&lt;/goal&gt; 071 &lt;/goals&gt; 072 &lt;/execution&gt; 073 &lt;/executions&gt; 074 &lt;configuration&gt; 075 &lt;webappDirectory&gt; 076 ${webappDirectory} 077 &lt;/webappDirectory&gt; 078 &lt;/configuration&gt; 079 &lt;/plugin&gt; 080 081 &lt;plugin&gt; 082 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; 083 &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt; 084 &lt;version&gt;2.3.2&lt;/version&gt; 085 &lt;configuration&gt; 086 &lt;source&gt;1.6&lt;/source&gt; 087 &lt;target&gt;1.6&lt;/target&gt; 088 &lt;/configuration&gt; 089 &lt;/plugin&gt; 090 &lt;/plugins&gt; 091 092 &lt;pluginManagement&gt; 093 &lt;plugins&gt; 094 &lt;plugin&gt; 095 &lt;groupId&gt;org.eclipse.m2e&lt;/groupId&gt; 096 &lt;artifactId&gt;lifecycle-mapping&lt;/artifactId&gt; 097 &lt;version&gt;1.0.0&lt;/version&gt; 098 &lt;configuration&gt; 099 &lt;lifecycleMappingMetadata&gt; 100 &lt;pluginExecutions&gt; 101 &lt;pluginExecution&gt; 102 &lt;pluginExecutionFilter&gt; 103 &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt; 104 &lt;artifactId&gt;gwt-maven-plugin&lt;/artifactId&gt; 105 &lt;versionRange&gt;2.4.0&lt;/versionRange&gt; 106 &lt;goals&gt; 107 &lt;goal&gt;resources&lt;/goal&gt; 108 &lt;goal&gt;compile&lt;/goal&gt; 109 &lt;goal&gt;test&lt;/goal&gt; 110 &lt;goal&gt;i18n&lt;/goal&gt; 111 &lt;goal&gt;generateAsync&lt;/goal&gt; 112 &lt;/goals&gt; 113 &lt;/pluginExecutionFilter&gt; 114 &lt;action&gt; 115 &lt;execute /&gt; 116 &lt;/action&gt; 117 &lt;/pluginExecution&gt; 118 &lt;pluginExecution&gt; 119 &lt;pluginExecutionFilter&gt; 120 &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt; 121 &lt;artifactId&gt;maven-war-plugin&lt;/artifactId&gt; 122 &lt;versionRange&gt;[2.1.1,)&lt;/versionRange&gt; 123 &lt;goals&gt; 124 &lt;goal&gt;exploded&lt;/goal&gt; 125 &lt;/goals&gt; 126 &lt;/pluginExecutionFilter&gt; 127 &lt;action&gt; 128 &lt;execute /&gt; 129 &lt;/action&gt; 130 &lt;/pluginExecution&gt; 131 &lt;/pluginExecutions&gt; 132 &lt;/lifecycleMappingMetadata&gt; 133 &lt;/configuration&gt; 134 &lt;/plugin&gt; 135 &lt;/plugins&gt; 136 &lt;/pluginManagement&gt; 137 138 &lt;/build&gt; 139 140 &lt;dependencies&gt; 141 142 &lt;!-- Google Web Toolkit Stuff --&gt; 143 &lt;dependency&gt; 144 &lt;groupId&gt;com.google.gwt&lt;/groupId&gt; 145 &lt;artifactId&gt;gwt-servlet&lt;/artifactId&gt; 146 &lt;version&gt;${gwtVersion}&lt;/version&gt; 147 &lt;scope&gt;runtime&lt;/scope&gt; 148 &lt;/dependency&gt; 149 &lt;dependency&gt; 150 &lt;groupId&gt;com.google.gwt&lt;/groupId&gt; 151 &lt;artifactId&gt;gwt-user&lt;/artifactId&gt; 152 &lt;version&gt;${gwtVersion}&lt;/version&gt; 153 &lt;scope&gt;provided&lt;/scope&gt; 154 &lt;/dependency&gt; 155 &lt;dependency&gt; 156 &lt;groupId&gt;junit&lt;/groupId&gt; 157 &lt;artifactId&gt;junit&lt;/artifactId&gt; 158 &lt;version&gt;4.7&lt;/version&gt; 159 &lt;scope&gt;test&lt;/scope&gt; 160 &lt;/dependency&gt; 161 &lt;dependency&gt; 162 &lt;groupId&gt;javax.validation&lt;/groupId&gt; 163 &lt;artifactId&gt;validation-api&lt;/artifactId&gt; 164 &lt;version&gt;1.0.0.GA&lt;/version&gt; 165 &lt;scope&gt;test&lt;/scope&gt; 166 &lt;/dependency&gt; 167 &lt;dependency&gt; 168 &lt;groupId&gt;javax.validation&lt;/groupId&gt; 169 &lt;artifactId&gt;validation-api&lt;/artifactId&gt; 170 &lt;version&gt;1.0.0.GA&lt;/version&gt; 171 &lt;classifier&gt;sources&lt;/classifier&gt; 172 &lt;scope&gt;test&lt;/scope&gt; 173 &lt;/dependency&gt; 174 175 &lt;!-- Spring --&gt; 176 &lt;dependency&gt; 177 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 178 &lt;artifactId&gt;org.springframework.context&lt;/artifactId&gt; 179 &lt;version&gt;${spring.version}&lt;/version&gt; 180 &lt;/dependency&gt; 181 &lt;dependency&gt; 182 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 183 &lt;artifactId&gt;org.springframework.core&lt;/artifactId&gt; 184 &lt;version&gt;${spring.version}&lt;/version&gt; 185 &lt;/dependency&gt; 186 &lt;dependency&gt; 187 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 188 &lt;artifactId&gt;org.springframework.web&lt;/artifactId&gt; 189 &lt;version&gt;${spring.version}&lt;/version&gt; 190 &lt;/dependency&gt; 191 &lt;dependency&gt; 192 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 193 &lt;artifactId&gt;org.springframework.web.servlet&lt;/artifactId&gt; 194 &lt;version&gt;${spring.version}&lt;/version&gt; 195 &lt;/dependency&gt; 196 &lt;dependency&gt; 197 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 198 &lt;artifactId&gt;org.springframework.beans&lt;/artifactId&gt; 199 &lt;version&gt;${spring.version}&lt;/version&gt; 200 &lt;/dependency&gt; 201 &lt;dependency&gt; 202 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 203 &lt;artifactId&gt;org.springframework.oxm&lt;/artifactId&gt; 204 &lt;version&gt;${spring.version}&lt;/version&gt; 205 &lt;/dependency&gt; 206 &lt;dependency&gt; 207 &lt;groupId&gt;org.springframework&lt;/groupId&gt; 208 &lt;artifactId&gt;spring-jdbc&lt;/artifactId&gt; 209 &lt;version&gt;${spring.version}&lt;/version&gt; 210 &lt;/dependency&gt; 211 212 &lt;!--db --&gt; 213 &lt;dependency&gt; 214 &lt;groupId&gt;net.sourceforge.jtds&lt;/groupId&gt; 215 &lt;artifactId&gt;jtds&lt;/artifactId&gt; 216 &lt;version&gt;1.2.4&lt;/version&gt; 217 &lt;/dependency&gt; 218 &lt;dependency&gt; 219 &lt;groupId&gt;org.mybatis&lt;/groupId&gt; 220 &lt;artifactId&gt;mybatis-spring&lt;/artifactId&gt; 221 &lt;version&gt;1.0.2&lt;/version&gt; 222 &lt;/dependency&gt; 223 &lt;dependency&gt; 224 &lt;groupId&gt;org.springframework.data&lt;/groupId&gt; 225 &lt;artifactId&gt;spring-data-commons-core&lt;/artifactId&gt; 226 &lt;version&gt;1.1.0.RELEASE&lt;/version&gt; 227 &lt;/dependency&gt; 228 &lt;dependency&gt; 229 &lt;groupId&gt;commons-dbcp&lt;/groupId&gt; 230 &lt;artifactId&gt;commons-dbcp&lt;/artifactId&gt; 231 &lt;version&gt;1.2.2&lt;/version&gt; 232 &lt;/dependency&gt; 233 234 235 &lt;!-- logging --&gt; 236 237 &lt;dependency&gt; 238 &lt;groupId&gt;ant&lt;/groupId&gt; 239 &lt;artifactId&gt;ant-apache-log4j&lt;/artifactId&gt; 240 &lt;version&gt;1.6.5&lt;/version&gt; 241 &lt;/dependency&gt; 242 243 &lt;dependency&gt; 244 &lt;groupId&gt;log4j&lt;/groupId&gt; 245 &lt;artifactId&gt;log4j&lt;/artifactId&gt; 246 &lt;version&gt;1.2.16&lt;/version&gt; 247 &lt;/dependency&gt; 248 249 &lt;dependency&gt; 250 &lt;groupId&gt;net.cds.cps.dao.logger&lt;/groupId&gt; 251 &lt;artifactId&gt;LoggingDAO&lt;/artifactId&gt; 252 &lt;version&gt;1.0.0&lt;/version&gt; 253 &lt;/dependency&gt; 254 &lt;/dependencies&gt; 255 256 &lt;repositories&gt; 257 &lt;repository&gt; 258 &lt;id&gt;asc.internal&lt;/id&gt; 259 &lt;name&gt;Internal Repository&lt;/name&gt; 260 &lt;url&gt;http://repository/maven2/internal&lt;/url&gt; 261 &lt;/repository&gt; 262 &lt;repository&gt; 263 &lt;id&gt;springsource-release&lt;/id&gt; 264 &lt;name&gt;SpringSource Releases Repository&lt;/name&gt; 265 &lt;url&gt;http://repository.springsource.com/maven/bundles/release&lt;/url&gt; 266 &lt;/repository&gt; 267 &lt;repository&gt; 268 &lt;id&gt;springsource-external&lt;/id&gt; 269 &lt;name&gt;SpringSource External Releases Repository&lt;/name&gt; 270 &lt;url&gt;http://repository.springsource.com/maven/bundles/external&lt;/url&gt; 271 &lt;/repository&gt; 272 &lt;/repositories&gt; 273 274 &lt;pluginRepositories&gt; 275 &lt;pluginRepository&gt; 276 &lt;id&gt;gwt-maven-plugins&lt;/id&gt; 277 &lt;url&gt;http://gwt-maven.googlecode.com/svn/trunk/mavenrepo/&lt;/url&gt; 278 &lt;/pluginRepository&gt; 279 &lt;/pluginRepositories&gt; 280 281 &lt;distributionManagement&gt; 282 &lt;repository&gt; 283 &lt;id&gt;internal&lt;/id&gt; 284 &lt;name&gt;Internal Shared Maven Repository&lt;/name&gt; 285 &lt;url&gt;scp://maven/var/www/html/maven2/internal&lt;/url&gt; 286 &lt;/repository&gt; 287 &lt;/distributionManagement&gt; 288 289 &lt;/project&gt; </code></pre>
 

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