问题
Looking at the readme for google-fhir it says to run bazel build, which works, however none of the protocol files have been compiled.
Running protoc --proto_path=. --java_out=. proto/stu3/resources.proto returns a bunch of error about other protos not being found. This goes backwards until 'descriptor.proto' which is not a proto in the folder. None of the protocol files in that directory will manually compile into java files.
*On another note, I was able to take other example protos from other sources and compile those successfully.
UPDATE
Running the command protoc --proto_path=proto/stu3/ --java_out=target proto/stu3/resources.proto from the google-fhir base directory returns the following output:
~/fhir-master$ protoc --proto_path=proto/stu3/ --java_out=target proto/stu3/resources.proto
proto/stu3/annotations.proto: File not found.
proto/stu3/codes.proto: File not found.
proto/stu3/datatypes.proto: File not found.
resources.proto: Import "proto/stu3/annotations.proto" was not found or had errors.
resources.proto: Import "proto/stu3/codes.proto" was not found or had errors.
resources.proto: Import "proto/stu3/datatypes.proto" was not found or had errors.
resources.proto:84:5: "String" is not defined.
resources.proto:87:14: "Extension" is not defined.
resources.proto:90:14: "Extension" is not defined.
resources.proto:94:5: "Reference" is not defined.
resources.proto:97:5: "PositiveInt" is not defined.
...
...
Those files are definitely located in the same proto directory.
UPDATE 2
Well, this definitely doesn't work right out of the box. Moving the files around, I was able to generate the target folder with a bunch of Java files. However, trying to compile them, I get errors for files that don't exist:
symbol: class CodeableConcept
location: package com.google.fhir.stu3.proto
./PlanDefinition.java:30950: error: cannot find symbol
public com.google.fhir.stu3.proto.CodeableConceptOrBuilder getJurisdictionOrBuilder(
^
symbol: class CodeableConceptOrBuilder
location: package com.google.fhir.stu3.proto
./PlanDefinition.java:30956: error: cannot find symbol
private java.util.List<com.google.fhir.stu3.proto.CodeableConcept> topic_;
^
symbol: class CodeableConcept
location: package com.google.fhir.stu3.proto
./PlanDefinition.java:30964: error: cannot find symbol
public java.util.List<com.google.fhir.stu3.proto.CodeableConcept> getTopicList() {
^
symbol: class CodeableConcept
location: package com.google.fhir.stu3.proto
./PlanDefinition.java:30974: error: cannot find symbol
public java.util.List<? extends com.google.fhir.stu3.proto.CodeableConceptOrBuilder>
.... ^
100 errors.
! Also, I don't see these file here: https://github.com/google/protobuf/tree/master/java/core/src/main/java/com/google/protobuf
回答1:
it looks like your command for compilation is not well formatted: --proto_path= This is the path to your proto --java_out= This is the folder where your class will be compiled
Your arguement is: proto/stu3/resources.proto, so I deduce that your files are located in proto/stu3.
Could you try this command and let us know if it worked for you:
protoc --proto_path=proto/stu3/ --java_out=target proto/stu3/resources.proto
If your proto descriptor are complete, you should have no compilation error, and your result should be in the folder "target".
EDIT:
looking at your latest edit, I would say that you should move resources.proto into your base directory and run the following command:
protoc --proto_path=. --java_out=target resources.proto
As the path to your import is coded in your import. This is a bit difficult to help, as we don't have access to your entire proto descriptor. If you took it from an online repo, it would help if you could share it.
来源：https://stackoverflow.com/questions/49950107/how-to-compile-google-fhir-proto-files