Bazel build is not working on from Maven project - maven

Question

I'm new to Bazel and learning its build work, currently I am trying to do with bazel build from a Maven project, please advise me how to make it working, thanks.
Here is the WORKSPACE file I am trying to define:
maven_jar(
name = "junit",
artifact = "junit:junit:3.8.1",
)
maven_jar(
name = "log4j1",
artifact = "org.apache.logging.log4j:log4j-core:2.6.2",
)
maven_jar(
name = "log4j2",
artifact = "org.apache.logging.log4j:log4j-api:2.6.2",
)
.....
Here is the BUILD file I am trying to define:
package(default_visibility = ["//visibility:public"])
java_binary(
name = "everything",
srcs = glob(["src/main/java/**/*.java"]),
resources = glob(["src/main/resources/**"]),
main_class = "src/main/java/com/test/test/test/App",
deps = [
"#junit//jar",
"#log4j1//jar",
"#log4j2//jar",
"#jackson//jar",
"#jsonsimple//jar",
"#commonsdbutils//jar",
"#commons//jar",
"#guava//jar",
"#poi//jar"],
)
Here is I got Bazel build results:
mbp:bazel_test me$ bazel build //:everything
INFO: Analysed target //:everything (1 packages loaded).
INFO: Found 1 target...
ERROR: /Users/me/git/test/test/BUILD:4:1: Building everything-class.jar (104 source files) failed (Exit 1)
src/main/java/com/test/test/test/Testapp.java:13: error: cannot find symbol
import org.apache.poi.ss.usermodel.Cell;
^
symbol: class Cell
location: program package org.apache.poi.ss.usermodel
.....
Target //:everything failed to build

Answer 1

I see two problems here:
The main_class attribute should use dots instead of slashes:
java_binary(
name = "everything",
srcs = glob(["src/main/java/**/*.java"]),
main_class = "src.main.java.com.test.test.test.App",
...
There's no org.apache.poi.ss.usermodel.Cell class in the poi jar.
Find the jar's name:
$ bazel query --output=build #poi//jar
...
java_import(
name = "jar",
visibility = ["//visibility:public"],
jars = ["#poi//jar:poi-ooxml-3.9.jar"],
srcjar = "#poi//jar:poi-ooxml-3.9-sources.jar",
)
The package's location is $(bazel info output_base)/external/poi, and now we know (from the srcs attribute in the bazel query output above) that the file is called poi-ooxml-3.9.jar:
$ unzip -l $(bazel info output_base)/external/poi/jar/poi-ooxml-3.9.jar | grep "org.apache.poi.ss.usermodel"
0 2012-11-26 17:14 org/apache/poi/ss/usermodel/
2970 2012-11-26 17:14 org/apache/poi/ss/usermodel/WorkbookFactory.class