Question

在我最近无法升级到Ubuntu 14.10后，安装程序将我的系统恢复到标准的14.04配置（这就是它所说的）。现在我在使用R中的rJava和OpenStreetMap包时遇到了问题。 sudo update-alternatives --config java的输出是;

There are 3 choices for the alternative java (providing /usr/bin/java).

  Selection    Path                                            Priority   Status
------------------------------------------------------------
  0            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      auto mode
  1            /usr/lib/jvm/java-6-openjdk-amd64/jre/bin/java   1061      manual mode
* 2            /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java   1071      manual mode
  3            /usr/lib/jvm/jre1.7.0/jre1.7.0_21/bin/java       3         manual mode

然后我运行：sudo R CMD javareconf：

/usr/lib/R/etc/ldpaths: line 1: :/usr/lib/jvm/java-7-openjdk-amd64/jre: No such file or directory
/usr/lib/R/etc/ldpaths: line 1: :/usr/lib/jvm/java-7-openjdk-amd64/jre: No such file or directory
Java interpreter : /usr/bin/java
Java version     : 1.7.0_75
Java home path   : /usr/lib/jvm/java-7-openjdk-amd64/jre
Java compiler    : /usr/bin/javac
Java headers gen.: /usr/bin/javah
Java archive tool: /usr/bin/jar

trying to compile and link a JNI progam 
detected JNI cpp flags    : -I$(JAVA_HOME)/../include
detected JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -ljvm
/usr/lib/R/etc/ldpaths: line 1: :/usr/lib/jvm/java-7-openjdk-amd64/jre: No such file or directory
/usr/lib/R/etc/ldpaths: line 1: :/usr/lib/jvm/java-7-openjdk-amd64/jre: No such file or directory
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -I/usr/lib/jvm/java-7-openjdk-amd64/jre/../include     -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c conftest.c -o conftest.o
gcc -std=gnu99 -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -o conftest.so conftest.o -L/usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server -ljvm -L/usr/lib/R/lib -lR


JAVA_HOME        : /usr/lib/jvm/java-7-openjdk-amd64/jre
Java library path: $(JAVA_HOME)/lib/amd64/server
JNI cpp flags    : -I$(JAVA_HOME)/../include
JNI linker flags : -L$(JAVA_HOME)/lib/amd64/server -ljvm
Updating Java configuration in /usr/lib/R
Done.

但是，如果我开始在R工作，我会收到消息：

/usr/lib/R/etc/ldpaths: line 1: :/usr/lib/jvm/java-7-openjdk-amd64/jre: No such file or directory

OpenStreetMap会抛出以下错误：

java.lang.NullPointerException
    at edu.cens.spatial.RTileController.getTileValues(RTileController.java:117)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at RJavaTools.invokeMethod(RJavaTools.java:386)
Error in osmtile(x, y, zoom, type) : could not obtain tile: 39746 1 2

我该怎么办？我使用的脚本很长时间没有改变，之前工作正常（我不确定失败的升级是否与错误有关）

在Ubuntu 14.04上运行rJava的问题

0 个答案: