How to use flask to make a webservice? that contains various functions and can be called by a third party

I am a rookie in FLASK. Now I want to use FLASK to put a series of functions into a webservice, which can be called by a third party with Java (there is no need to write the interface for the time being, only a function interface is needed). Recently, I have seen some things about FLASK, but I still have a lot of questions. Take the following small project as an example:

create a new FLASK project using VS2015, and write the function I need to encapsulate in the views.py file. The function is to pass a name of string type and return "hello name":

"""
Routes and views for the flask application.
"""

from datetime import datetime
from flask import render_template
from flask import Flask
from FlaskWebProject1 import app

app = Flask(__name__)

@app.route("/")
@app.route("/greeting",methods = ["GET"])
def greeting(name):
    return ("hello"+name)

if __name__ == "__main__":
    app.run(debug=True)

if I want to encapsulate this greeting () function, should it be written as above? What else do I need to do in order for the webservice containing this function to be called by a third party using Java? How to judge the success of the webservice? Thank you for your attention.

-sharp get -sharp webapi -sharp :http://docs.jinkan.org/docs/flask/quickstart.html-sharpa-minimal-application -sharp -sharp 1. '/''/greeting' -sharp : -sharp =============== -sharp @app.route('/') -sharp def index(): -sharp pass -sharp =============== -sharp @app.route('/greeting',methods = ["GET"]) -sharp def greeting(): -sharp pass -sharp =============== @app.route('/') @app.route('/greeting',methods = ["GET"]) -sharp name -sharp =============== -sharp : -sharp url /greeting/tom -sharp name 'tom' -sharp @app.route('/greeting/<name>',methods = ["GET"]) -sharp def greeting(name): -sharp =============== -sharp : -sharp urlparam /greeting?name=tom -sharp @app.route('/greeting',methods = ["GET"]) -sharp def greeting(): -sharp name = flask.request.args.get(name) -sharp =============== def greeting(name): return ("hello"+name) -sharp api -sharp java http